No need to specify rubygems version

Signed-off-by: Michael Barton <mail@michaelbarton.me.uk>
Update gems to latest versions

Signed-off-by: Michael Barton <mail@michaelbarton.me.uk>
Add ruby 2.0.0 and 1.9.2 to travis

Signed-off-by: Michael Barton <mail@michaelbarton.me.uk>
Merge branch 'features/compatability' into develop
Bump minor version

Signed-off-by: Michael Barton <mail@michaelbarton.me.uk>
Merge branch 'release/0.1.0'

  * Removed broken rubygems requirement