[TxMt] iCalendar Syntax

[Eric Hsu]

Man, I wish I'd had this iCalendar bundle when I was working on my 
last little project...

Anyway, I submitted two bug fixes using SVN:
- DTEND was getting highlighted as a END: event. Changed to look for 
^BEGIN and ^END.
- Also removed '' from highlighting, as events like SUMMARY:Go to 
Mom's house were getting wrongly highlighted.

Chris can always revert it if he doesn't like the changes...

- Eric
-- 
Eric Hsu, Assistant Professor of Mathematics
San Francisco State University
erichsu at math.sfsu.edu
http://math.sfsu.edu/hsu