Several new features added and documented

* Added right click contextual menu items to tabs
* Added a default settings file to allow for disabling keymaps
* Added the ability to clone to a new window
* Tweaked the several files syntax (SublimeLinter - it hurts your
feelings - but makes you code better)
Ammended typos in documentation
Ammended typos in documentation
Fixed bug with right tab click menu
Merge pull request #4 from mattbolt/master

Clone to New Window, Right Click Tabs and Keymap Disabling added