Merge pull request quiqueg#12 from jayrhynas/swift-snippet

Updated swift snippet

Merge pull request quiqueg#11 from ybakos/keybindings_fix

Remove trailing comma from key bindings.

Merge pull request quiqueg#10 from andreyvit/patch-1

Enable comment/uncomment

Added MIT license

Updated and cleaned up README

.swift file extension

Basic language syntax