Added some stuff
Contructor overloading
Add important checking flag
Forgot an add
added files
Merge branch 'master' of https://github.com/joshua2ua/lonelyTwitter

Conflicts:
	src/ca/ualberta/cs/lonelytwitter/importantTweetModel.java
	src/ca/ualberta/cs/lonelytwitter/lonelyTweetModel.java
	src/ca/ualberta/cs/lonelytwitter/normalTweetModel.java