upload passing builds to s3
Merge pull request #94 from fivetanley/s3-builds

upload passing builds to s3
Fixes IE array detection

toString.call([]) fails while the Object.prototype.toString.call([]) works
some cross browser fixes

- toString.call([]) angers IE, use Object.prototype.toString instead
- getPrototypeOf polyfil
Update README.md
v2.0.1
Merge branch 'master' of https://github.com/tildeio/rsvp.js