TraceGL Released as opensource

[rikarends]

Released as opensource and some chrome issues fixed:
Hackaway!
https://github.com/traceglMPL/tracegl

[balupton]

Sweet. How come the new repo? Why not just use this one?

[dandv]

For a new user, the repo situation is confusing. Can you please edit the README and add a bit about the history and situation of the project?