add git commit number to footer of pybertini docs

the documentation now depends on gitpython -- though sphinx will merely fail to generate the version numbers if it is not present.
thanks to
* Jim Easterbrook's reply in https://groups.google.com/forum/#!topic/sphinx-users/9eBpfT-WEmY
and
* gitpython-developers/GitPython#255

Author: danielle brake

python/docs/source/conf.py

@@ -69,14 +69,23 @@
 copyright = '2015-2018, Bertini Team'
 author = 'Bertini Team'
 
+
 # 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 = '1.0'
-# The full version, including alpha/beta/rc tags.
-release = '1.0a1'
+try:
+    import git  #package gitpython
+    repo = git.Repo(search_parent_directories=True) 
+    last_commit = str(repo.head.commit) 
+    version = last_commit[:7]
+    release = last_commit # full version
+except:
+    last_commit = 'not_from_git'
+    version = last_commit # The short X.Y version.
+    release = version # The full version, including alpha/beta/rc tags.
+
+
+
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.

python/python.sublime-project

@@ -4,7 +4,6 @@
 		{
 			"path": ".",
 			"file_exclude_patterns": ["serialization_test*",
-										"Makefile",
 										"Makefile.in",
 										"*.la",
 										"libtool",