I added border-radius, border-color, border-width
I did not added it to DTAttributedTextView as i don't use it.
I tested it with TTTAttributeLabel and it works perfectly
added support for border-color,border-radius, border-width
missing from the last commit
should not have been part of this PR
Coverage remained the same when pulling 451b9d7 on Akylas:border-radius_and_more into 40254fe on Cocoanetics:develop.