Remove unneeded inlineCallbacks and add module docstring.
Remove unneeded inlineCallbacks and add module docstring.

TouK/vumi,vishwaprakashmishra/xmatrix,TouK/vumi,TouK/vumi,vishwaprakashmishra/xmatrix,vishwaprakashmishra/xmatrix,harrissoerja/vumi,harrissoerja/vumi,harrissoerja/vumi