Moved release notes into a separate file

To increase the readability of the README.rst file I moved
the release notes into a new separate file RELEASE_NOTES.rst.

Also removed all trailing whitespaces.

Change-Id: I95c6543fd30344ecaa0f9ccf4540d3452520735e
Fixes an errant link in the Rackspace API Reference

Header output had a broken link; missing slash

Change-Id: Iec656124c23cc52c19714f3f2a338af3afb0a227
Merge "Fixes an errant link in the Rackspace API Reference"
Adds new Rackspace tagline logo

Change-Id: I9fe667be1c2d3b03d1c602fa9a3aea074cfefc51
Merge "Moved release notes into a separate file"
Merge "Adds new Rackspace tagline logo"
Updated release notes for the 2.1.2 release

Change-Id: I9f5c7c545a568177bfd534bc78a1a75c80361e7a
Prevent fast-forwarding

This commit serves only to prevent Gerrit from fast-forwarding the
release branch.

Change-Id: I00ac21a857a9357ab48fd5c0a09f04e562b46317