JavaScript support for Jasmine testing framework

[luca-digrazia]

Jasmine is a behavior-driven development framework for testing JavaScript code. It does not depend on any other JavaScript frameworks. It does not require a DOM. And it has a clean, obvious syntax so that you can easily write tests.

A code example to use this framework is:

describe("A suite is just a function", function() {
  var a;

  it("and so is a spec", function() {
    a = true;

    expect(a).toBe(true);
  });
});

DiffSearch does not support the second argument of this method call ( function(){...} ) at the moment. As a result, the goal of this task is to include the above support. The first step is to look at the file DiffSearch/src/main/resources/ANTLR/ECMAScript.g4 to check where the incompatibility is located. Then, the grammar should be edited to fix the issue.