Some useful links were missing from the README file which
would be useful for the first timers. So, adding those links
into the file.
Change-Id: Iac89fed65190084878aeac93987cd857793c9424
Partial-Implements: blueprint mistral-python-client-docs
'python setup.py install' will not install requirements.
We have to install it manually.
Please see comment #6 here:
https://bugs.launchpad.net/pbr/+bug/1341341
Change-Id: I8d5b2cc07f17c86ec278b240c64e96dfb39aea40