Update .travis.yml
Added a branch alias
Merge pull request #41 from GrahamCampbell/patch-1

Update .travis.yml
Merge pull request #40 from GrahamCampbell/patch-2

Added a branch alias
Fixed the readme version constraint
Merge pull request #42 from GrahamCampbell/patch-1

Fixed the readme version constraint
Fixing command exception throwing, fixing validating additionalParameters, adding validation tests. Closes #43
Adding a default Model if no value is set. Do not overwrite previously set results. Closes #30
Update readme to improve documentation (#46)
Merge pull request #48 from bonndan/master

Update readme to improve documentation (#46)
Merge remote-tracking branch 'remotes/origin/master' into on-php-5-3
Adapting new code to php 5.3