* #1 发送图片测试

* tslint

* 调整文件路径为stream

* remove bl,mime

* #4 implement
contact.say(new MediaMessage('/tmp/file.jpg'))
message.say(new MediaMessage('/tmp/haha.gif'))

* clean message.mediaId

* move MediaMessage to message.ts

* package: add bl 1.2.0

* merge Chatie-master

* Merge branch 'master' into pr/4

# Conflicts:
#	package.json

* restore puppet-web.ts format

BREAKING CHANGE: `room-join`/`room-leave`/`join`/`leave` events now only emit `contactList: Contact[]` as params. no `contact: Contact` anymore.

fix `friend` listener param defination: `request` could be undefined(for a confirmed friend relationship)