remove snapchat node, update pusher node, grammer correct random node package.json

social/pusher/README.md

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+node-red-node-pusher
+====================
+
+A <a href="http://nodered.org" target="_new">Node-RED</a> node to send and receive messages using Pusher.com.
+
+Pre-requisites
+--------------
+
+You need a valid Pusher App key, secret and id from [http://pusher.com](http://pusher.com)
+
+Install
+-------
+
+Run the following command in the root directory of your Node-RED install. this is usually ~/.node-red
+
+        npm install node-red-node-pusher
+
+Usage
+-----
+
+###Input
+
+Pusher input mode. Use this node to subscribe to a Pusher channel/event.
+You need a valid Pusher App key.
+
+The node will set **msg.payload** to the message that arrives, and **msg.topic** to the eventname.
+
+###Output
+
+Pusher output node for sending messages to a specific channel/event.
+You need an App key, secret and ID of a Pusher app.
+
+The node will send the **msg.payload** of the incoming message.