Add snippet message plugin.

.meteor/packages

.meteor/versions

packages/rocketchat-lib/server/models/Messages.coffee

packages/rocketchat-message-snippet/.npm/package/.gitignore

packages/rocketchat-message-snippet/.npm/package/README

...cketchat-message-snippet/.npm/package/npm-shrinkwrap.json

packages/rocketchat-message-snippet/client/actionButton.js

...rocketchat-message-snippet/client/lib/SnippetedMessage.js

packages/rocketchat-message-snippet/client/messageType.js

packages/rocketchat-message-snippet/client/snippetMessage.js

packages/rocketchat-message-snippet/client/tabBar.js

...tchat-message-snippet/client/views/snippetedMessages.html

...ketchat-message-snippet/client/views/snippetedMessages.js

...ages/rocketchat-message-snippet/lib/chatSnippetMessage.js

packages/rocketchat-message-snippet/package.js

...cketchat-message-snippet/server/methods/snippetMessage.js

...-message-snippet/server/publications/snippetedMessages.js

...ges/rocketchat-message-snippet/server/startup/settings.js