Add a requirements.txt for sphinx

Signed-off-by: Chin Yeung Li <[email protected]>

Author: chinyeungli

docs/requirements.txt

@@ -0,0 +1,30 @@
+alabaster==0.7.12
+Babel==2.8.0
+certifi==2019.11.28
+chardet==3.0.4
+colorama==0.4.3
+doc8==0.8.0
+docutils==0.16
+idna==2.9
+imagesize==1.2.0
+Jinja2==2.11.1
+MarkupSafe==1.1.1
+packaging==20.1
+pbr==5.4.4
+Pygments==2.5.2
+pyparsing==2.4.6
+pytz==2019.3
+requests==2.23.0
+restructuredtext-lint==1.3.0
+six==1.14.0
+snowballstemmer==2.0.0
+Sphinx==2.4.3
+sphinx-rtd-theme==1.0.0
+sphinxcontrib-applehelp==1.0.1
+sphinxcontrib-devhelp==1.0.1
+sphinxcontrib-htmlhelp==1.0.3
+sphinxcontrib-jsmath==1.0.1
+sphinxcontrib-qthelp==1.0.2
+sphinxcontrib-serializinghtml==1.1.3
+stevedore==1.32.0
+urllib3==1.25.8