Fix highlighting when a string is given as a parameter to a method.
Merge pull request #3 from ajh17/string-param-fix

Fix highlighting when a string is given as a parameter to a method.
Indentation for after [
Example of string arguments
Align colons of arguments
Colon alignment example
Add syntax highlighting support for nested block comments.

Remove useless skip construct from nested comment match
Update regexes with quotes over slashes
Add nested multiline comment example
Fix indent issue

When the previous line had {} it would still indent the next line as if
you where inside of the block. Same with []
Add Swift Attributes
Add examples of attributes
Add @ to iskeyword

This is required to use the keyword type for matching swift attributes
that all begin with "@"