Refactors.
Refactors.

- Region names as keys mapped to icon names.

biodamasceno/GitGutter,biodamasceno/GitGutter,tushortz/GitGutter,tushortz/GitGutter,robfrawley/sublime-git-gutter,biodamasceno/GitGutter,akpersad/GitGutter,natecavanaugh/GitGutter,jisaacks/GitGutter,robfrawley/sublime-git-gutter,tushortz/GitGutter,michaelhogg/GitGutter,akpersad/GitGutter,robfrawley/sublime-git-gutter,robfrawley/sublime-git-gutter,michaelhogg/GitGutter,michaelhogg/GitGutter,natecavanaugh/GitGutter,biodamasceno/GitGutter,natecavanaugh/GitGutter,natecavanaugh/GitGutter,tushortz/GitGutter,akpersad/GitGutter,akpersad/GitGutter,michaelhogg/GitGutter