Migrate sdc docs

Merging this will create
https://onap-sdc.readthedocs.io
This build will run in parallel
to the current docs generation method
until we are ready to cut over.

Issue-ID: CIMAN-364
Signed-off-by: Jessica Wagantall <jwagantall@linuxfoundation.org>
Change-Id: I04c354d75404565e7bc640f5f0b585865f1a92e4
diff --git a/docs/requirements-docs.txt b/docs/requirements-docs.txt
new file mode 100644
index 0000000..b3188dd
--- /dev/null
+++ b/docs/requirements-docs.txt
@@ -0,0 +1,15 @@
+tox
+Sphinx
+doc8
+docutils
+setuptools
+six
+sphinx_rtd_theme>=0.4.3
+sphinxcontrib-blockdiag
+sphinxcontrib-needs>=0.2.3
+sphinxcontrib-nwdiag
+sphinxcontrib-seqdiag
+sphinxcontrib-swaggerdoc
+sphinxcontrib-plantuml
+sphinx_bootstrap_theme
+lfdocs-conf