- supports new json format **ONLY**.

- changed options:
  added "--noCreate"
  added "-m", "--moduleName"
  deleted "c", "u", "p"

- rewritten in es6

- package.json:
  - upgraded protobufjs to 6.8.4 (latest)
  - upgraded dustjs to 2.7.5 (latest)
  - changed optimist to yargs
  - removed vinyl-file
  - added lodash

"noCtor": Don't generate constructor
"noCoding": Don't generate encode()/ decode() methods
"noInherit": Don't inherit Message<T>

* Also update version to 3.0.0

Using protobufjs, now can load *.proto file also.
 - rewrote codes and templates with protobufjs
 - "-f", "--file" options can load *.json or *.proto

- version: updated to 4.0.0

- options:
 - removed: -m, --moduleName options
 - added: --bytes option
  - "--bytes": Set type name of "bytes" field. (default: Uint8Array)

- fixed property type name of interface
 - in interface, if type of property is "message", now correctly
   specifies the message interface name, not message class name
 - e.g. field1: Protocols.IPerson;

- fixed optional field
 - if message field is "optional", makes optional property correctly.
 - e.g. field2?: string;