Add README to docs folder (#216)

Signed-off-by: Brian Yu <bxyu@nvidia.com>

Author: bxyu-nvidia

docs/README.md

@@ -0,0 +1,5 @@
+# Welcome to Gym documentation!
+
+Please check out our
+- [Tutorials📚](tutorials/README.md)
+- [How To's and FAQs💡](how-to-faq.md)

docs/index.md

@@ -3,7 +3,7 @@
 ```
 
 ```{toctree}
-:caption: Tutorials 📚
+:caption: Tutorials📚
 :hidden:
 
 tutorials/README.md
@@ -22,5 +22,6 @@ tutorials/09-configuration-guide.md
 :hidden:
 
 apidocs/index.rst
+README.md
 how-to-faq.md
 ```