Correlation td tidy up (#605)
Correlation td tidy up (#605)

* ini files in tests will now be copied into dist

* Readme included in manifest

* Cleanup of td files added to correlation functions

anubhavvardhan/qutip,qutip/qutip,cgranade/qutip,cgranade/qutip,qutip/qutip,anubhavvardhan/qutip