Added almost all examples from LingPipe 4 Tutorial

I needed to evaluate LingPipe so decided to port all the tutorial examples to Scala to learn the API. I saw you had started to do something similar so decided to fork off scalingpipe. 

Features of my fork:
* Has 53 examples across all the tutorial categories.
* Updated README.md describing these categories and pointing to LingPipe API.
* Project has been converted to an sbt project from mvn.
* o.s.sips.InterestingPhrasesDemo.scala replaces o.s.sips.InterestingPhrases.scala

Would appreciate a merge. 

Thanks and regards
Sujit