Complete code for "Hello World"

Author name changed in HelloConfig.scala
Author name changed in HellWebApplication.scala
Author name changed in LICENSE
Scala Version change to 2.11.2 in build.gradle

Code changes in HelloConfig.scala to render a "hello, world" page at
http://ec2-54-183-166-34.us-west-1.compute.amazonaws.com:8080
(localhost:8080)