Point readme to git.o.o instead of github

And fix a typo

Change-Id: I1d77c1ab7323ffccbd89e2a52cbcb45f4caa081a
Fix spelling mistake occured=>occurred

Change-Id: Ic4d88a8f7b97cbc8196af7d3a20a6d0a0fa136c7
Merge "Point readme to git.o.o instead of github"