Removed the Slider's background colour and border properties.
The slider value was previously set in the get method for the thumb's frame.

This is now set in the gesture recogniser. It didn't make sense to set it in a get method and caused a bug where the thumb wasn't set correctly when the value was set through code or interface builder.
Merge branch 'master' of github.com:beautify/beautify-ios into UISlider

Conflicts:
	Beautify Tests/ConfigParserTests.m
	Beautify Tests/PartialSliderStyle.json
	Beautify.xcodeproj/project.pbxproj
Merge pull request #66 from ChrisGrant/UISlider

Removed the Slider's background colour and border properties.