Add version number to documentation (#909)

* Get version from cil.version
* Show full version including commit tag

docs/source/conf.py

@@ -15,8 +15,11 @@
 import os
 import sys
 import re
+
 sys.path.insert(0, os.path.abspath('../../Wrappers/Python/'))
 
+from cil import version
+
 # -- Project information -----------------------------------------------------
 
 project = 'CIL'
@@ -25,9 +28,8 @@
 
 author = 'Edoardo Pasca'
 
-# The short X.Y version
-version = re.sub('^v', '', os.popen('git describe').read().strip())
-version = version.split('-')[0]
+version = version.version
+release = version
 
 # -- General configuration ---------------------------------------------------