Add a stub file for showing an action setting page.
Initial commit of hatohol-voyager.

This is a simple command line client.
Add a stub of a FaceRest's action addtion API.
Use a dispatcher function.
Parse an action type.
Implement a part of code for the response of an action addition request.
Remove unnecessary lines.
Fix the problem that passes parameters as a body, not query parameters.
Return an error with a json format, becuase the error doesn't happen on a HTTP layer.
Add a function name for JSonp to an error response if needed.
call MLPL_ERR() internally to make it code simple when replyError() is called.
Add a new test for the error case that doesn't specify 'type' parameter.
Reduce the number of lines.
Fix a wrong format character.
Parse a command parameter.
Add a test for the error case that doesn't have 'command' parameter.
Clean up with a helper function.
Avoid a crash or an indeterminate result due to the inconsistency of parameters when errorMessage includes format characters such as %d.
Cast the void pointer to char * at the time of acquisition in order to make it easy after.
Implement a parser of paramters for action addition API.