Move acknowledgments of included third-party software to README.md

This allows licensee and similar tools (and thus GitHub)
to properly recognize the GPL in COPYING.md

Change-Id: Ifa9d46b87837b347a8fa00c54785543f30e39e4f
diff --git a/COPYING.md b/COPYING.md
index d01ca33..496acdb 100644
--- a/COPYING.md
+++ b/COPYING.md
@@ -1,32 +1,4 @@
-NFD is licensed under the terms of the GNU General Public License,
-version 3 or later.
-
-NFD relies on third-party software, licensed under the following licenses:
-
-- ndn-cxx is licensed under the terms of the
-  [GNU Lesser General Public License version 3](https://github.com/named-data/ndn-cxx/blob/master/COPYING.md)
-
-- The Boost libraries are licensed under the
-  [Boost Software License 1.0](https://www.boost.org/users/license.html)
-
-- CityHash is licensed under the
-  [MIT license](https://github.com/google/cityhash/blob/master/COPYING)
-
-- Libpcap is licensed under the
-  [3-clause BSD license](https://github.com/the-tcpdump-group/libpcap/blob/master/LICENSE)
-
-- The WebSocket++ library is licensed under the terms of the
-  [BSD license](https://github.com/zaphoyd/websocketpp/blob/0.8.1/COPYING)
-
-- The waf build system is licensed under the terms of the
-  [BSD license](https://github.com/named-data/NFD/blob/master/waf)
-
-The GPL license is provided below in this file.  For more information about
-these licenses, see <https://www.gnu.org/licenses/>
-
---------------------------------------------------------------------------------
-
-### GNU GENERAL PUBLIC LICENSE
+# GNU GENERAL PUBLIC LICENSE
 
 Version 3, 29 June 2007
 
@@ -36,7 +8,7 @@
 Everyone is permitted to copy and distribute verbatim copies of this
 license document, but changing it is not allowed.
 
-### Preamble
+## Preamble
 
 The GNU General Public License is a free, copyleft license for
 software and other kinds of works.
@@ -101,9 +73,9 @@
 The precise terms and conditions for copying, distribution and
 modification follow.
 
-### TERMS AND CONDITIONS
+## TERMS AND CONDITIONS
 
-#### 0. Definitions.
+### 0. Definitions.
 
 "This License" refers to version 3 of the GNU General Public License.
 
@@ -143,7 +115,7 @@
 the interface presents a list of user commands or options, such as a
 menu, a prominent item in the list meets this criterion.
 
-#### 1. Source Code.
+### 1. Source Code.
 
 The "source code" for a work means the preferred form of the work for
 making modifications to it. "Object code" means any non-source form of
@@ -184,7 +156,7 @@
 The Corresponding Source for a work in source code form is that same
 work.
 
-#### 2. Basic Permissions.
+### 2. Basic Permissions.
 
 All rights granted under this License are granted for the term of
 copyright on the Program, and are irrevocable provided the stated
@@ -209,7 +181,7 @@
 conditions stated below. Sublicensing is not allowed; section 10 makes
 it unnecessary.
 
-#### 3. Protecting Users' Legal Rights From Anti-Circumvention Law.
+### 3. Protecting Users' Legal Rights From Anti-Circumvention Law.
 
 No covered work shall be deemed part of an effective technological
 measure under any applicable law fulfilling obligations under article
@@ -225,7 +197,7 @@
 the work's users, your or third parties' legal rights to forbid
 circumvention of technological measures.
 
-#### 4. Conveying Verbatim Copies.
+### 4. Conveying Verbatim Copies.
 
 You may convey verbatim copies of the Program's source code as you
 receive it, in any medium, provided that you conspicuously and
@@ -238,7 +210,7 @@
 You may charge any price or no price for each copy that you convey,
 and you may offer support or warranty protection for a fee.
 
-#### 5. Conveying Modified Source Versions.
+### 5. Conveying Modified Source Versions.
 
 You may convey a work based on the Program, or the modifications to
 produce it from the Program, in the form of source code under the
@@ -273,7 +245,7 @@
 in an aggregate does not cause this License to apply to the other
 parts of the aggregate.
 
-#### 6. Conveying Non-Source Forms.
+### 6. Conveying Non-Source Forms.
 
 You may convey a covered work in object code form under the terms of
 sections 4 and 5, provided that you also convey the machine-readable
@@ -369,7 +341,7 @@
 source code form), and must require no special password or key for
 unpacking, reading or copying.
 
-#### 7. Additional Terms.
+### 7. Additional Terms.
 
 "Additional permissions" are terms that supplement the terms of this
 License by making exceptions from one or more of its conditions.
@@ -428,7 +400,7 @@
 form of a separately written license, or stated as exceptions; the
 above requirements apply either way.
 
-#### 8. Termination.
+### 8. Termination.
 
 You may not propagate or modify a covered work except as expressly
 provided under this License. Any attempt otherwise to propagate or
@@ -456,7 +428,7 @@
 reinstated, you do not qualify to receive new licenses for the same
 material under section 10.
 
-#### 9. Acceptance Not Required for Having Copies.
+### 9. Acceptance Not Required for Having Copies.
 
 You are not required to accept this License in order to receive or run
 a copy of the Program. Ancillary propagation of a covered work
@@ -467,7 +439,7 @@
 not accept this License. Therefore, by modifying or propagating a
 covered work, you indicate your acceptance of this License to do so.
 
-#### 10. Automatic Licensing of Downstream Recipients.
+### 10. Automatic Licensing of Downstream Recipients.
 
 Each time you convey a covered work, the recipient automatically
 receives a license from the original licensors, to run, modify and
@@ -492,7 +464,7 @@
 any patent claim is infringed by making, using, selling, offering for
 sale, or importing the Program or any portion of it.
 
-#### 11. Patents.
+### 11. Patents.
 
 A "contributor" is a copyright holder who authorizes use under this
 License of the Program or a work on which the Program is based. The
@@ -561,7 +533,7 @@
 any implied license or other defenses to infringement that may
 otherwise be available to you under applicable patent law.
 
-#### 12. No Surrender of Others' Freedom.
+### 12. No Surrender of Others' Freedom.
 
 If conditions are imposed on you (whether by court order, agreement or
 otherwise) that contradict the conditions of this License, they do not
@@ -574,7 +546,7 @@
 satisfy both those terms and this License would be to refrain entirely
 from conveying the Program.
 
-#### 13. Use with the GNU Affero General Public License.
+### 13. Use with the GNU Affero General Public License.
 
 Notwithstanding any other provision of this License, you have
 permission to link or combine any covered work with a work licensed
@@ -585,7 +557,7 @@
 section 13, concerning interaction through a network will apply to the
 combination as such.
 
-#### 14. Revised Versions of this License.
+### 14. Revised Versions of this License.
 
 The Free Software Foundation may publish revised and/or new versions
 of the GNU General Public License from time to time. Such new versions
@@ -611,7 +583,7 @@
 author or copyright holder as a result of your choosing to follow a
 later version.
 
-#### 15. Disclaimer of Warranty.
+### 15. Disclaimer of Warranty.
 
 THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
 APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
@@ -623,7 +595,7 @@
 DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR
 CORRECTION.
 
-#### 16. Limitation of Liability.
+### 16. Limitation of Liability.
 
 IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
 WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR
@@ -635,7 +607,7 @@
 TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER
 PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
 
-#### 17. Interpretation of Sections 15 and 16.
+### 17. Interpretation of Sections 15 and 16.
 
 If the disclaimer of warranty and limitation of liability provided
 above cannot be given local legal effect according to their terms,
@@ -646,7 +618,7 @@
 
 END OF TERMS AND CONDITIONS
 
-### How to Apply These Terms to Your New Programs
+## How to Apply These Terms to Your New Programs
 
 If you develop a new program, and you want it to be of the greatest
 possible use to the public, the best way to achieve this is to make it
diff --git a/README-dev.md b/README-dev.md
index 66109bc..56b2e40 100644
--- a/README-dev.md
+++ b/README-dev.md
@@ -45,7 +45,7 @@
 
 ## Unit tests
 
-To run unit tests, NFD needs to be configured and build with unit test support:
+To run the unit tests, NFD needs to be configured and built with unit test support:
 
 ```shell
 ./waf configure --with-tests # --debug is also strongly recommended while developing
diff --git a/README.md b/README.md
index bcdcbe5..28707da 100644
--- a/README.md
+++ b/README.md
@@ -59,3 +59,11 @@
 
 NFD is free software distributed under the GNU General Public License version 3.
 See [`COPYING.md`](COPYING.md) for details.
+
+NFD contains third-party software, licensed under the following licenses:
+
+* *CityHash* is licensed under the
+  [MIT license](https://github.com/google/cityhash/blob/master/COPYING)
+* The *WebSocket++* library is licensed under the
+  [3-clause BSD license](https://github.com/zaphoyd/websocketpp/blob/0.8.1/COPYING)
+* The *waf* build system is licensed under the [3-clause BSD license](waf)