Added category method for returning a hex string from a UIColor in rgb color space
documentation
use a default value if getRed:green:blue:alpha: fails
documentation
handle all possible return cases for getRed:... and getWhite:...
formatting
- need to define the string inside this condition as well
- removing copy/pasted comment
- no need to predefine wValue
extract formatted nsstring statements into reusable method
documentation
clean up process
Merge pull request #82 from Raizlabs/feature/sixstringtheory/colorHexStrings

Added category method for returning a hex string from a UIColor in rgb color space