Reorganizing docs

- Adding quickstart examples for the different workflows
- Adding an environemnt overview
- Adding workflow definition
- Adding operation guide

Change-Id: I474dd1a2ea6e916512041f80f2ca3039718ab219
diff --git a/git_refs b/git_refs
index 1fa3f0a..f81e56e 100644
--- a/git_refs
+++ b/git_refs
@@ -11,15 +11,16 @@
 
 _REPO NAME_             _DIR_    _REF_
 
-bbsim                   /        master
-cord-tester             /        master
-ofagent-go              /        master
-openolt                 /        master
-pyvoltha                /        master
-voltctl                 /        master
-voltha-go               /        master
-voltha-openolt-adapter  /        master
-voltha-openonu-adapter  /        master
-voltha-protos           /        master
-voltha-system-tests     /        master
-kind-voltha             /        master
+bbsim                      /        master
+cord-tester                /        master
+ofagent-go                 /        master
+openolt                    /        master
+pyvoltha                   /        master
+voltctl                    /        master
+voltha-go                  /        master
+voltha-openolt-adapter     /        master
+voltha-openonu-adapter     /        master
+voltha-openonu-adapter-go  /        master
+voltha-protos              /        master
+voltha-system-tests        /        master
+kind-voltha                /        master