DOC: try to add ipython to dependencies.

doc/requirements.txt

@@ -1,3 +1,4 @@
 sphinx-better-theme==0.1.4
 numpydoc
 docutils==0.12
+ipython

doc/source/conf.py

@@ -18,25 +18,6 @@
 # documentation root, use os.path.abspath to make it absolute, like shown here.
 #sys.path.insert(0, os.path.abspath('.'))
 
-
-#try:
-#    from mock import Mock as MagicMock
-#except ImportError:
-#    def install(package):
-#        pip.main(['install', package])
-#    install('mock')
-#    from mock import Mock as MagicMock
-
-
-#class Mock(MagicMock):
-#    @classmethod
-#    def __getattr__(cls, name):
-#        return Mock()
-
-#MOCK_MODULES = ['ipython', 'pyyaml', 'numpy', 'numpy.linalg', 'numba','numexpr','sympy','pandas','slycot','matplotlib']
-#sys.modules.update((mod_name, Mock()) for mod_name in MOCK_MODULES)
-
-
 # -- General configuration -----------------------------------------------------