first commit
remove unneeded build files
set playExternalAssets to add javascript files output by scalajs into the Play assets
add the scalajvm/public/javascripts/scalajs folder to .gitignore
packageJS is called when developing with Play, optimizeJS is called when Play dist
trigger packageJS when calling 'compile'
watch scalajs sources to trigger packageJS on ~compile and ~run
include the scalajs output files in main.scala.html
add README.md