a few changes to the package tree
add "ant build" target to build.xml

build is just an alias of compile, added this just ‘cause I’m used to it
finish large-scale package name refactor; dev branch builds again

• change main package name from edu.allegheny.tweetanalyze ->
edu.allegheny.knightingale
• change package refresh -> twitter
• move packages refresh and parser -> io.twitter and io.parser
Merge pull request #1 from TeamKnightengale/hawk_dev

Package-tree refactors.