Remove trailing slash from URLs

Remove the trailing slash from the end of the URLs, as it results
in misleading feature documentation, see Ceilometer bug #1202744.
Merge pull request #12 from ildikov/master

Remove trailing slash from URLs
Update announcement for 0.7 release

Change-Id: I326f5497f3450a8cd5e42a5d5680e3d2e4d60bca
fix tags syntax
Fix formatting issue for docstrings without param list

Fixes bug occured in Ceilometer V2 API doc:
http://docs.openstack.org/developer/ceilometer/webapi/v2.html#capabilities

The patch adds a blank line before return type block to avoid formatting
issues like this:
https://bugs.launchpad.net/ceilometer/+bug/1293547
Merge pull request #13 from ildikov/master

Fix formatting issue for docstrings without param list