[SVN] Bundle commit 513

[neoneye at gmail.com]

string-interpolate could only recognize one of Rubys many ways of interpolation. I have added interpolation support for:
1. instance-variables,
2. class-variables,
3. global-variables.

NOTE:  there is no support for all global variables.. because these involves a bunch of symbols, for instance:  $$,  $:, $0 .. etc.. lots of them.

Changed:
U   trunk/Ruby.tmbundle/Syntaxes/Ruby.plist