Add prefix to category methods to prevent name collision.

[idikic]

Hello,

after using HexColors within our project, via TSMessage pod, I have discovered that the category methods are not prefixed. Which in turn led to name collision with similar category used by another pod.

As it turns out this was one of those sneaky bug's to discover :).

Method name that collided was:

colorWith8BitRed:(NSInteger)red green:(NSInteger)green blue:(NSInteger)blue

I think it is a good pratice to have prefix on categories.

And by the way thanks for all your work, this is one of those must have libraries.

[mRs-]

TSMessages is using HexColors as a dependency maybe it's because of this.

But yeah prefixing is really a good thing to do. I creating a new major release for this because it's api breaking changes :)

[idikic]

Great thanks :)