Add example request flow

README.md

@@ -9,3 +9,16 @@ auth request to GitLab Rails app) -> git-upload-pack
 
 There are two patches in the repo that show what would need to
 change in GitLab / NGINX to make this work.
+
+## Example request flow
+
+- start POST repo.git/git-receive-pack to NGINX
+- ..start POST repo.git/git-receive-pack to gitlab-git-http-server
+- ....start POST repo.git/git-receive-pack to Unicorn for auth
+- ....end POST to Unicorn for auth
+- ....start git-receive-pack process from gitlab-git-http-server
+- ......start POST /api/v3/internal/allowed to Unicorn from Git hook (check protected branches)
+- ......end POST to Unicorn from Git hook
+- ....end git-receive-pack process
+- ..end POST to gitlab-git-http-server
+- end POST to NGINX