Update README
Update README

changed the version and api usage in README
jmptrader/javascript,devnarayan/javascript,arminkhoshbin/javascript,sateen/javascript,pierredelisle7/javascript,devnarayan/javascript,sateen/javascript,gcnonato/javascript,pierredelisle7/javascript,arminkhoshbin/javascript,devnarayan/javascript,jmptrader/javascript,pierredelisle7/javascript,pierredelisle7/javascript,arminkhoshbin/javascript,pierredelisle7/javascript,sateen/javascript,devnarayan/javascript,jmptrader/javascript,gcnonato/javascript,Yesware/pubnub-javascript,jwulf/javascript,devnarayan/javascript,jmptrader/javascript,gcnonato/javascript,Yesware/pubnub-javascript,gcnonato/javascript,sateen/javascript,Yesware/pubnub-javascript,Yesware/pubnub-javascript,jmptrader/javascript,Yesware/pubnub-javascript,sateen/javascript,jwulf/javascript,gcnonato/javascript,jwulf/javascript,jwulf/javascript,arminkhoshbin/javascript,jmptrader/javascript,jwulf/javascript,devnarayan/javascript,jmptrader/javascript,devnarayan/javascript,arminkhoshbin/javascript