Added documentation infrastructure

Created by: stefanoborini

Added documentation infrastructure: sphinx and configuration files.

doc/source/conf.py

@@ -6,8 +6,10 @@ import sys
 import os
 
 
-sys.path.insert(0, os.path.join(os.path.abspath(__file__), "..", ".."))
-
+sys.path.insert(0, os.path.join(
+    os.path.dirname(os.path.abspath(__file__)), "..", "..")
+    )
+print(sys.path)
 MOCK_MODULES=[]
 
 def _warn_node(self, msg, node, **kwargs):