Add some preliminary API info to the README.
Immutable() now accepts varargs (and makes an immutable array of them).
Rename internal functions makeImmutableMap and toImmutable to just
makeImmutableObject and Immutable.
Refactor testSuiteFromClaims into slightly simpler testFromClaims
Rename Immutable.Array.spec.js to ImmutableArrayCompat.spec.js
Update spec description.
Add a spec for Immutable.
Replace Jasmine with Mocha and Chai.