Changed keyword detection from String.contains() to regular expression matching
Merge branch 'master' of https://github.com/luke-plewa/TwitCrit

Conflicts:
	src/edu/calpoly/twitcrit/Tester.java
Merge branch 'master' of https://github.com/luke-plewa/TwitCrit

Conflicts:
	src/edu/calpoly/twitcrit/Tester.java
Reintroduced keyword  'top'