Add a tagger server main method.
Add a 'cascade' and 'extractors' route.
Improve GET message.
Rename edu.knowitall package to org.allenai.
Use Segement instead of regex in spray route.
Actually use specified port.
Merge remote-tracking branch 'origin/server' into test

Conflicts:
	cli/build.sbt
Factor server code into separate project.
Add gitignore.
Start on 0.0.0.0.
Add cascade/level route to taggers.
Merge pull request #68 from allenai/server

Add a main method to start a tagger as an extraction server.