Rewrite almost everything...

-make it more interactive (preview)
-recordable in macro
-label is correct in undo
details...
readme update
Adding regular expression and char. count.

(Stolen idea from https://github.com/xavi-/sublime-selectuntil)
Small enhancements
Fix issue with {count} and add help text
Merge pull request #2 from bizoo/master

Add visual preview, macro support and correct undo mangement