Use instance-var response rather than repeating in method args.
Merge branch 'refactor-module-names' of github.com:pmahoney/rubylet into refactor-module-names
Merge branch 'refactor-module-names' of github.com:pmahoney/rubylet into refactor-module-names
Make constants for some HTTP methods.
Remove Environment, Hash subclasses.  Move constants into shared helper class.  Add comments, minor refactors here and there.