docs+ci: Ubuntu 12.04 is no longer supported

Change-Id: I423a0f22662383f52413d12dc26d2a4ed08579e2
Refs: #3599, #3600
diff --git a/.jenkins.d/00-deps.sh b/.jenkins.d/00-deps.sh
index 6e1d94f..b9ceb8b 100755
--- a/.jenkins.d/00-deps.sh
+++ b/.jenkins.d/00-deps.sh
@@ -17,13 +17,8 @@
 fi
 
 if has Ubuntu $NODE_LABELS; then
-    BOOST_PKG=libboost-all-dev
-    if has Ubuntu-12.04 $NODE_LABELS; then
-        BOOST_PKG=libboost1.48-all-dev
-    fi
-
     set -x
-    sudo apt-get update -qq -y
-    sudo apt-get -qq -y install build-essential pkg-config $BOOST_PKG \
-                                libcrypto++-dev libsqlite3-dev libpcap-dev
+    sudo apt-get -qq update
+    sudo apt-get -qq install build-essential pkg-config libboost-all-dev \
+                             libcrypto++-dev libsqlite3-dev libpcap-dev
 fi
diff --git a/.jenkins.d/README.md b/.jenkins.d/README.md
index b1a3fbf..386e2db 100644
--- a/.jenkins.d/README.md
+++ b/.jenkins.d/README.md
@@ -13,13 +13,13 @@
 
   * `[OS_TYPE]`: `Linux`
   * `[DISTRO_TYPE]`: `Ubuntu`
-  * `[DISTRO_VERSION]`: `Ubuntu-12.04`, `Ubuntu-14.04`, `Ubuntu-15.04`
+  * `[DISTRO_VERSION]`: `Ubuntu-14.04`, `Ubuntu-16.04`
 
   Possible values of OSX OS:
 
   * `[OS_TYPE]`: `OSX`
   * `[DISTRO_TYPE]`: `OSX` (can be absent)
-  * `[DISTRO_VERSION]`: `OSX-10.10`, `OSX-10.9`, `OSX-10.8`, `OSX-10.7`
+  * `[DISTRO_VERSION]`: `OSX-10.11`, `OSX-10.10`, `OSX-10.9`, `OSX-10.8`
 
 - `JOB_NAME`: optional variable to define type of the job.  Depending on the defined job type,
   the build scripts can perform different tasks.
diff --git a/docs/INSTALL.rst b/docs/INSTALL.rst
index 3d94d74..079fb03 100644
--- a/docs/INSTALL.rst
+++ b/docs/INSTALL.rst
@@ -16,7 +16,7 @@
 On OS X, NFD can be installed with MacPorts.  Refer to :ref:`Install NFD Using the NDN
 MacPorts Repository on OS X` for more details.
 
-On Ubuntu 12.04, 14.04, or 14.10 NFD can be installed from NDN PPA repository.  Refer to
+On Ubuntu 14.04 and 16.04, NFD can be installed from NDN PPA repository.  Refer to
 :ref:`Install NFD Using the NDN PPA Repository on Ubuntu Linux`.
 
 Future releases could include support for other platforms.  Please send us feedback on the
@@ -72,7 +72,7 @@
 Install NFD Using the NDN PPA Repository on Ubuntu Linux
 --------------------------------------------------------
 
-NFD binaries and related tools for Ubuntu 12.04, 14.04, or 14.10 can be installed using PPA
+NFD binaries and related tools for Ubuntu 14.04 and 16.04 can be installed using PPA
 packages from named-data repository.  First, you will need to add ``named-data/ppa``
 repository to binary package sources and update list of available packages.
 
@@ -80,21 +80,12 @@
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 To simplify adding new PPA repositories, Ubuntu provides ``add-apt-repository`` tool,
-which is not installed by default on some platforms.
-
-On Ubuntu **12.04**:
-
-::
-
-    sudo apt-get install python-software-properties
-
-On Ubuntu **14.04** or **14.10**:
+which is not installed by default on some systems.
 
 ::
 
     sudo apt-get install software-properties-common
 
-
 Adding NDN PPA
 ~~~~~~~~~~~~~~
 
@@ -147,13 +138,13 @@
 
 -  ``pkg-config``
 
-   On OS X 10.8, 10.9, and 10.10 with MacPorts:
+   On OS X with MacPorts:
 
    ::
 
        sudo port install pkgconfig
 
-   On Ubuntu >= 12.04:
+   On Ubuntu:
 
    ::
 
@@ -161,9 +152,9 @@
 
 -  ``libpcap``
 
-   Comes with the base system on OS X 10.8, 10.9, and 10.10.
+   Comes with the base system on OS X 10.8, 10.9, 10.10, and 10.11.
 
-   On Ubuntu >= 12.04:
+   On Ubuntu:
 
    ::
 
@@ -175,14 +166,14 @@
 -  ``graphviz``
 -  ``python-sphinx``
 
-   On OS X 10.8, 10.9, and 10.10 with MacPorts:
+   On OS X with MacPorts:
 
    ::
 
        sudo port install doxygen graphviz py27-sphinx sphinx_select
        sudo port select sphinx py27-sphinx
 
-   On Ubuntu >= 12.04:
+   On Ubuntu:
 
    ::