Initial commit of Sphinx docs

Change-Id: I9fca8fb98502dffc2555f9de7f507b6f006e0e77
Signed-off-by: John DeNisco <jdenisco@cisco.com>

docs/etc/requirements.txt

@@ -0,0 +1,44 @@
+alabaster==0.7.10
+argh==0.26.2
+Babel==2.5.3
+backports-abc==0.5
+certifi==2018.1.18
+chardet==3.0.4
+CommonMark==0.5.4
+doc8==0.8.0
+docutils==0.14
+futures==3.2.0; python_version < '3.0'
+idna==2.6
+imagesize==1.0.0
+Jinja2==2.10
+livereload==2.5.1
+MarkupSafe==1.0
+packaging==17.1
+pathtools==0.1.2
+pbr==4.0.2
+pluggy==0.6.0
+port-for==0.3.1
+py==1.5.3
+Pygments==2.2.0
+pyparsing==2.2.0
+pytz==2018.4
+PyYAML==3.12
+recommonmark==0.4.0
+requests==2.18.4
+restructuredtext-lint==1.1.3
+singledispatch==3.4.0.3
+six==1.11.0
+snowballstemmer==1.2.1
+Sphinx==1.7.2
+sphinx-autobuild==0.7.1
+sphinx-bootstrap-theme==0.6.5
+sphinx-rtd-theme==0.3.0
+sphinxcontrib-httpdomain==1.6.1
+sphinxcontrib-websupport==1.0.1
+stevedore==1.28.0
+tornado==5.0.2
+tox==3.0.0
+typing==3.6.4
+urllib3==1.22
+virtualenv==15.2.0
+watchdog==0.8.3