describe = function(description, specDefinitions) {
  return jasmine.getEnv().describe(description, specDefinitions);
}
Defines a suite of specifications.

Stores the description and all defined specs in the Jasmine environment as one suite of specs. Variables declared
are accessible by calls to beforeEach, it, and afterEach. Describe blocks can be nested, allowing for specialization
of setup in some tests.

@example
// TODO: a simple suite

// TODO: a simple suite with a nested describe block

@param {String} description A string, usually the class under test.
@param {Function} specDefinitions function that defines several specs.