added UITextView Stylers basics

these are the ones I needed to add for my own needs, paying it forward here.  Includes corner radius, border width, font and border color.
moved generic stylers to the UIView and removed redundant
Added masksToBounds styler to UIView
removed redundant stylers in UIButton that existed in UIView
Merge pull request #39 from GantMan/master

added UITextView Stylers basics