PSync.pc.in: remove -lndn-cxx

Also change GPL to LGPL in README

Change-Id: I67249704b0b8e426d32543cb9fabaf40bfa66a9a
diff --git a/PSync.pc.in b/PSync.pc.in
index b50c7ac..e72112c 100644
--- a/PSync.pc.in
+++ b/PSync.pc.in
@@ -5,6 +5,6 @@
 Name: PSync
 Description: PSync library
 Version: @VERSION@
-Libs: -L${libdir} -lPSync -lndn-cxx
+Libs: -L${libdir} -lPSync
 Cflags: -I${includedir}
 
diff --git a/README.md b/README.md
index a8e8790..760c0e0 100644
--- a/README.md
+++ b/README.md
@@ -12,9 +12,9 @@
 PSync uses [ndn-cxx](https://github.com/named-data/ndn-cxx) library as NDN development
 library.
 
-PSync is an open source project licensed under GPL 3.0 (see `COPYING.md` for more
+PSync is an open source project licensed under LGPL 3.0 (see `COPYING.md` for more
 detail).  We highly welcome all contributions to the PSync code base, provided that
-they can licensed under GPL 3.0+ or other compatible license.
+they can be licensed under LGPL 3.0+ or other compatible license.
 
 Feedback
 --------
@@ -44,4 +44,4 @@
 command will disable parallel compilation.
 
 If configured with tests: `./waf configure --with-tests`), the above commands will also
-generate unit tests in `./build/unit-tests`
\ No newline at end of file
+generate unit tests in `./build/unit-tests`