Migrate sdc-sdc-workflow-designer docs

Merging this will create
https://onap-sdc-sdc-workflow-designer.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: I3f5d2ae1354045437581edac43865b7230724ec4
diff --git a/docs/.gitignore b/docs/.gitignore
new file mode 100644
index 0000000..43ca5b6
--- /dev/null
+++ b/docs/.gitignore
@@ -0,0 +1,3 @@
+/.tox
+/_build/*
+/__pycache__/*