Merge pull request #1357 from GeoffreyBooth/coffeescript-keywords

Add missing CoffeeScript keywords

Author: isagalaev

src/languages/coffeescript.js

@@ -11,7 +11,7 @@ function(hljs) {
     keyword:
       // JS keywords
       'in if for while finally new do return else break catch instanceof throw try this ' +
-      'switch continue typeof delete debugger super ' +
+      'switch continue typeof delete debugger super yield import export from as default await ' +
       // Coffee keywords
       'then unless until loop of by when and or is isnt not',
     literal: