Fixes #6: Update OSX keyboard shortcut
Change `backspace` key to `delete` for Max OS X
Add Mac-specific helper comment to step 1
Update 2.2. Column Selection.php

Update Mac OS shortcut for Column selection
Merge pull request #9 from sergeylunev/patch-2

Update 2.2. Column Selection.php
Merge pull request #8 from mikemclin/bugfix/recent-edits-osx-keyboard

Change backspace key to delete for Mac OS X
Merge pull request #7 from mikemclin/bugfix/project-tool-window-osx-keyboard

Fixes #6: Update OSX keyboard shortcut
Updated slide deck with OSX keymappings
Merge pull request #1 from JetBrains/master

Pull in updates