Add sphinx read the doc theme.

Change-Id: Iade7c42081378bf211b81ad29b2898518442d2ff
Signed-off-by: Tibor <tifrank@cisco.com>
diff --git a/test/Makefile b/test/Makefile
index db64ad9..f3c71b5 100644
--- a/test/Makefile
+++ b/test/Makefile
@@ -55,7 +55,7 @@
 
 doc: verify-python-path
 	@virtualenv $(PYTHON_VENV_PATH) -p python2.7
-	@bash -c "source $(PYTHON_VENV_PATH)/bin/activate && pip install $(PYTHON_DEPENDS) sphinx"
+	@bash -c "source $(PYTHON_VENV_PATH)/bin/activate && pip install $(PYTHON_DEPENDS) sphinx sphinx-rtd-theme"
 	@bash -c "source $(PYTHON_VENV_PATH)/bin/activate && make -C doc WS_ROOT=$(WS_ROOT) BR=$(BR) NO_VPP_PAPI=1 html"
 
 .PHONY: wipe-doc
diff --git a/test/doc/conf.py b/test/doc/conf.py
index 96ea50f..ec8958e 100644
--- a/test/doc/conf.py
+++ b/test/doc/conf.py
@@ -122,7 +122,8 @@
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
 #
-html_theme = 'alabaster'
+#html_theme = 'alabaster'
+html_theme = 'sphinx_rtd_theme'
 
 # Theme options are theme-specific and customize the look and feel of a theme
 # further.  For a list of options available for each theme, see the