Add PDF building
This commit add PDF building tox.ini environment and options for LaTeX
output. overview.rst is copied from README.rst. And, the original
README.rst file is shrunk because we don't need such a long information
in the README file. People can see the same contents in overview.rst
now.
Change-Id: Id654c814988e78704726d2ba8bea9a03ce8596f8
diff --git a/doc/requirements.txt b/doc/requirements.txt
index d959d44..2194dc4 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -1,6 +1,8 @@
# The order of packages is significant, because pip processes them in the order
# of appearance. Changing the order has an impact on the overall integration
# process, which may cause wedges in the gate later.
-openstackdocstheme>=1.18.1 # Apache-2.0
+openstackdocstheme>=1.20.0 # Apache-2.0
reno>=2.5.0 # Apache-2.0
-sphinx!=1.6.6,!=1.6.7,>=1.6.2 # BSD
+sphinx!=1.6.6,!=1.6.7,>=1.6.2,<2.0.0;python_version=='2.7' # BSD
+sphinx!=1.6.6,!=1.6.7,!=2.1.0,>=1.6.2;python_version>='3.4' # BSD
+sphinxcontrib-svg2pdfconverter>=0.1.0 # BSD