Add Hash part of rubyspec to test MapWrapper.
Hash#to_s uses inspect on keys and values.
Convert Scala symbols to JRuby. Implement Hash#values.
.gitignore Mac .DS_Store files.
Tag failing tests. Don't run them in Guard.

Also run guard when tags have changed.
Fix some rubyspec tests.
Use Ruby wrapper as initializer.
First shot at implementing eql?

Ruby uses stricter key comparisons than Scala.