Fix: false or null value in 'remove' field no longer deletes files. Tests included.

Signed-off-by: Joshua Paling <joshua.paling@gmail.com>
Update .travis.yml
Merge pull request #107 from joshuapaling/master

Fix: Empty 'remove' field no longer deletes files
Converted 0-100 thumbnailQuality param to appropriate 0-9 value when calling imagepng()

Signed-off-by: Joshua Paling <joshua.paling@gmail.com>
Merge pull request #115 from joshuapaling/master

Fixes issue #97 - invalid param for imagepng()
Fix `Undefined index` error. Closes #117
Properly handle database rollbacks when exceptions are thrown
Added error logging for thrown upload exceptions
Fully document polymorphic uploads. Closes #94. Closes #124
Fix App::uses() call for HttpSocket. Closes #101
Merge remote-tracking branch 'origin/master'

Conflicts:
	Model/Behavior/UploadBehavior.php
fixes resize band mode on imagick