Create evil-commentary

evil-commentary.el --- Comment stuff out. A port of vim-commentary.

This program emulates evil-commentary initially developed by Tim Pope
(tpope) It help you comment line with `counts` and `motions`.

`gcc` to comment/uncomment a line
`5gcc` to comment/uncomment 5 lines
`gc$` to comment/uncomment from current position
`gcap` to comment/uncomment current paragraph