Streams 41

Fixed datasift stream provider and created tests.  
DISCLAIMER:
The datasift api requires the use of java 7.  Although this will compile with java 6 it will not run.  I @ignored all of the tests so they wouldn't break the build.  I don't know how we want to handle this, but I vote we move to switching the entire project to use java 7.  I have confirmed that all classes compile and all tests pass with java 7.