Merge pull request #70 from square/jw/update-dependencies

Update JUnit and switch to AssertJ.
Update to Java 7. Add quick parse method for Path types.

This also changes the 'fileName' property of a file to 'filePath' to more accurately reflect its content.
Merge pull request #69 from square/jw/java7

Update to Java 7. Add quick parse method for Path types.
Rename a service 'method' to 'rpc'.