src: Centralize version number

As of this commit, the library's version number is defined in
src/version.hpp, and is propagated to waf/sphinx/doxygen.

Change-Id: I6513cc5a15f2c2afa7cf33844e85d199630fe559
Fixes: #1464
diff --git a/docs/conf.py b/docs/conf.py
index 60baa9a..4d2b58c 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -14,6 +14,7 @@
 
 import sys
 import os
+import re
 
 # If extensions (or modules to document with autodoc) are in another directory,
 # add these directories to sys.path here. If the directory is relative to the
@@ -45,18 +46,9 @@
 master_doc = 'index'
 
 # General information about the project.
-project = u'NDN C++ library with eXperimental eXtensions'
+project = u'ndn-cxx: NDN C++ library with eXperimental eXtensions'
 copyright = u'2014, Named Data Networking Project'
 
-# The version info for the project you're documenting, acts as replacement for
-# |version| and |release|, also used in various other places throughout the
-# built documents.
-#
-# The short X.Y version.
-version = '0.1.0'
-# The full version, including alpha/beta/rc tags.
-release = '0.1.0'
-
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
 #language = None