added JavaScript include tag examples with working "demo" keys for the PubNub 3.0 Real-time JavaScript Cloud Push API.
added JavaScript include tag examples with working "demo" keys for the PubNub 3.0 Real-time JavaScript Cloud Push API.

jamesward/pubnub-api,jamesward/pubnub-api,jamesward/pubnub-api,jamesward/pubnub-api,jamesward/pubnub-api,jamesward/pubnub-api,jamesward/pubnub-api,jamesward/pubnub-api,jamesward/pubnub-api