Update to include the FastSwitch plugin

A file of a given syntax will switch to a file with the same base name but with a different user defined extension. The file will be searched in a list of user define directory. The first file found respecting the criteria will be the one Sublime Text 2 will switch to.
Fix typo when the FastSwitch was added
Move the FastSwitch into the right slot
Merge pull request #1274 from papaDoc/master

added FastSwitch