Update Swift keywords for Swift 2
Update Swift keywords for Swift 2

AutoIt/code-prettify,googlearchive/code-prettify,EricFromCanada/code-prettify,codygray/code-prettify,codygray/code-prettify,codygray/code-prettify,googlearchive/code-prettify,googlearchive/code-prettify,LogtalkDotOrg/code-prettify,AutoIt/code-prettify,chrisrecher/code-prettify,EricFromCanada/code-prettify,chrisrecher/code-prettify,EricFromCanada/code-prettify,LogtalkDotOrg/code-prettify,chrisrecher/code-prettify,AutoIt/code-prettify,LogtalkDotOrg/code-prettify,chrisrecher/code-prettify