Merge pull request #86 from C4dynamics/dev

exclude tex files from github counter, show the reference manus in th…

Author: c4dynamics

.gitattributes

@@ -9,4 +9,4 @@
 *.nb linguist-vendored
 *.ipynb linguist-vendored
 *.bat linguist-vendored 
-
+*.tex linguist-vendored

docs/source/index.rst

@@ -202,7 +202,7 @@ The documentation is organized as follows:
   Car Tracker - Objects Detection and Kalman Filter <programs/car_tracker.ipynb>
 
 .. toctree::
-  :maxdepth: 1
+  :maxdepth: 2
   :caption: API
   :hidden: