Add mocking back in

docs/conf.py

@@ -14,6 +14,7 @@
 
 import sys
 import os
+from mock import Mock as MagicMock
 from sphinx.ext.autodoc import cut_lines
 
 # If extensions (or modules to document with autodoc) are in another directory,
@@ -58,6 +59,14 @@
     'python': ('http://docs.python.org/3.4', None)
 }
 
+class Mock(MagicMock):
+    @classmethod
+    def __getattr__(cls, name):
+            return Mock()
+
+MOCK_MODULES = ['fuel', 'progressbar']
+sys.modules.update((mod_name, Mock()) for mod_name in MOCK_MODULES)
+
 graphviz_dot_args = ['-Gbgcolor=#fcfcfc']  # To match the RTD theme
 graphviz_output_format = 'svg'  # To produce SVG figures