Fixed incorrect name for source file of Nucleotide exercise

The RobotName file should be named Robot, according to the tests

This will cause the correct directory structure to be created when fetching.

We will be relying on people installing gradle themselves. The documentation
on help.exercism.io has been updated with instructions for both Windows and Mac.

Update example.java

Missed the example file. Woah --> Whoa

Update BobTest.java

Woah -> Whoa

nucleotide-count: Remove special treatment of uracil

For the related discussion see https://github.com/exercism/xpython/pull/98.

Add MIT license

A straight port of the Ruby tests. The example implementation
uses Joda Time which is generally considered a saner date/time
library than what is built in to Java.

Use Guava in the tests to make it easier to build up
maps needed for testing the API.

Use fest-asserts in the test which offers additional clarity in the
expectations.

Improvements for Java support