ADDED:  SublimeText 3 support

Added RouterOS.sublime-package which is a zip file containing the two
.tmLanguage files for SublimeText 3 support.

Updated Documentation to be less mac-specific and add SublimeText 3
instructions.
Merge pull request #1 from StayFrosty/master

ADDED: SublimeText 3 support. Thanks to StayFrosty.