Add .overcommit.yml

We are using Gerrit for code review on this project, so we want
Overcommit to include the Gerrit Change-ID in every commit. This commit
brings in a configuration file to enable this hook.

Change-Id: Ib3f32ce5976ae354042744047e8b855357f95c51
Reviewed-on: http://gerrit.causes.com/38599
Tested-by: Joe Lencioni <joe.lencioni@causes.com>
Reviewed-by: Henric Trotzig <henric.trotzig@causes.com>
Update changelog

We had a changelog file, but failed to include any content in it. This
commit backfills the changelog with all of the releases so far and the
details about each release.

Change-Id: I8a165a37dd8b2a4484c8b724e06ac838787cf851
Reviewed-on: http://gerrit.causes.com/38600
Tested-by: Joe Lencioni <joe.lencioni@causes.com>
Reviewed-by: Henric Trotzig <henric.trotzig@causes.com>
Update for RSpec 3

There were a couple of minor changes that we needed to make for
compatibility with RSpec 3.

Fixes #1.

Change-Id: I337c9d7e899d775d3f1cd354737342a787d5fcba
Reviewed-on: http://gerrit.causes.com/38601
Tested-by: Joe Lencioni <joe.lencioni@causes.com>
Reviewed-by: Henric Trotzig <henric.trotzig@causes.com>
Bump version 0.1.2 -> 0.2.0

Now that we have updated this project to support RSpec 3, we want to cut
a new release so people can actually use it.

Change-Id: I7312b4c0921d70f7e474e1a35bbd4d38d2726442
Reviewed-on: http://gerrit.causes.com/38602
Tested-by: Joe Lencioni <joe.lencioni@causes.com>
Reviewed-by: Henric Trotzig <henric.trotzig@causes.com>