Fixed a minor typo htts:// -> https://
Merge pull request #158 from tamersaadeh/master

Fixed a minor typo in the README file
Merge branch 'master' of github.com:TooTallNate/Java-WebSocket
fix for #154
fix NullPointerException in WebSocketClient
Merge pull request #159 from MorganWu/master

fix NullPointerException in WebSocketClient
did a little refactoring to get rid of WebSocketImpl.socket and because of #159