add unit test and return list of satified documents
Merge remote-tracking branch 'origin/master'
Try to compress first indexer
add writetofile
Merge remote-tracking branch 'origin/master'

Conflicts:
	src/edu/nyu/cs/cs2580/Compress.java
Merge remote-tracking branch 'origin/master'

Conflicts:
	src/edu/nyu/cs/cs2580/Compress.java
	src/edu/nyu/cs/cs2580/IndexerInvertedDoconly.java
	src/edu/nyu/cs/cs2580/QueryPhrase.java
	src/edu/nyu/cs/cs2580/RankerFavorite.java