* remove unused responder functions
* rename chooseButtons to createGame
* clean up values returned by createGame
* tidy output handling in responder.php, and migrate loadActiveGames
  to new output handling method
* migrate loadButtonNames to new output-handling method
* migrate loadGameData to new format and do slightly more error-checking
* standardize internal error text a bit
* migrate loadPlayerName to the new way
Merge branch 'master' of github.com:buttonmen-dev/buttonmen into tkt-111

Conflicts:
	src/api/responder.php
* migrate loadPlayerNames to new format
* migrate login, logout, and default to new message format
* minimal migration of submitSwingValues and submitTurn to new format
* beginning of documentation for responder API
* output is now only ever set in one place, so clean up that variable set
* move setting of swing dice into BMInterface.php and clean up
  responses to user
Merge branch 'master' of github.com:buttonmen-dev/buttonmen into tkt-111
* move submitTurn logic into BMInterface, and print reasonable
  messages on successful and failed attacks
* update unit tests --- i changed the return value structure of create_game
* vagrant changes to get phpunit runnable on vagrant
* forgot to git add the vagrant phpunit file itself
Merge branch 'master' of github.com:buttonmen-dev/buttonmen into tkt-111
* change "succeeded" to "completed" for correctness until we fix
  things for the trip attack