Added viewcode plugin for source code visualization within the static website.

docs/source/conf.py

@@ -42,8 +42,8 @@ extensions = [
     'sphinx.ext.autodoc',
     'sphinx.ext.coverage',
     'sphinx.ext.napoleon',
-    'recommonmark'
-
+    'recommonmark',
+    'sphinx.ext.viewcode'
 ]
 
 # Add any paths that contain templates here, relative to this directory.