Property for the switch background color

[Darkkrye]

Hi, I've downloaded your lib because I've found it really nice.
But when I've started to use it, I've found something missing.

What I've found:

I have found that it is impossible to just change the switch background color. When you use the "backgroundColor" property nothing happen and the background still stay in white.

What I've done :

• I have created an IBDesignable property called "backColor" to allows user to change the switch background color.
• I also have created a new test function to be sure the code I've written works.

Commit description :

Added property to change the switch background color.
Added test for the property.

[codecov-io]

Current coverage is 42.02% (diff: 100%)

Merging #2 into master will increase coverage by 2.63%

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  Misses           80         80          
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[T-Pham]

Cool! Thanks, @Darkkrye. I will make some minor update and release a new version with this included.

[Darkkrye]

Ok. Glad to have helped :)

[T-Pham]

@Darkkrye just wanted to updating you that backColor is included in v2.0.1.

[Darkkrye]

Nice ! Thanx a lot ! :)