Updated compiler jar file to 20151015

[cmbankester]

I noticed when using the closure-compiler gem to compile some ES6 code that it was breaking on the following code:

const foo = {
  delete(arg){
    return "foobar";
  }
};

The issue seemed to be with the fact that the key was named delete and that it's using ES6 object method shorthand. Updating the compiler jar to the latest (20151015) fixed the issue.

[knowtheory]

Thanks @cmbankester! we'll roll out a gem momentarily.

[cmbankester]

Thanks! So speedy, I didn't even have time to update my rails apps Gemfiles to point to my fork!

[cmbankester]

Oh, we should probably update the README to indicate the new version of the JAR

[knowtheory]

Yep :) will do in the release process!