Add node specs using shmock mocking library
Lint the code
Factor out response data massaging

This factors out environment specific data massaging into its own function. This should probably be factored all the way out into its own class/function.. later.
Cleanup massageData function
The MethodFactory class is no longer a factory, just a Method class
Linting
Merge pull request #18 from kahnjw/add_node_tests

Add node tests