Refactored lib and test to make everything more maintainable

Moved over to request-mocha

Broke up all tests

Moved to remoteBody

Localized unnecessary sendResponse method

Removed annoying class-level methods

Renamed all references to local/remote and very happy

Cleaned up remaining traces of external

Moved from externalRes to outgoingRes

Added new message library

Switched from connections to messages

Switched out `store` for `fs-memory-store`

Removed dead fs-store