Merge branch 'release/0.4.0'
Merge branch 'release/0.5.0'
Merge branch 'release/0.5.1'
Updated Guzzle version, and enforce PHP 5.4.
Merge branch 'release/0.6.0'
Merge branch 'release/0.6.1'
Added build status icons to README.

No tests to pass yet though, so this will be failing constantly.
Merge branch 'master' of github.com:unilincoln-ost/nucleus-php into release/0.6.2
Merge branch 'release/0.6.2' into develop