Add a menu item that enables/disables the platform detection
Update README.md

Add usage and installation notes at the top, to make it clear that users have to ALT+Click things...
Update README.md

Changed my mind, usage & installation doesn't look/seem right at the top.
Update README.md
Merge pull request #8 from Kapeli/master

Added "Enable Dash Platform Detection" menu item and some "usability" fixes