Add initial Web Animations directory and test
Remove readme
Reorganise test structure
Remove another readme
Re-add README I shouldn't have removed
Update tests

Switch to milliseconds and remove unreliable use of performance timing
Replace iframe with data URI
Spin loop to make sure time passes before comparing times

Also use step_func to simplify code
Use idlharness.js to test IDL

As suggested per https://critic.hoppipolla.co.uk/showcomment?chain=4329
Update test assertions
Make quote marks consistent
Add use strict
Use t.step_func to simplify code

As per: https://critic.hoppipolla.co.uk/showcomment?chain=4438
Format loop

As per: https://critic.hoppipolla.co.uk/showcomment?chain=4439
Minor tweaks based on Mozilla review

* Add charset
* Simplify iframe
* Reformat idlArray test
* Add test for non-null timeline in iframe
Move IDL tests to a separate file

In response to issue:
https://critic.hoppipolla.co.uk/showcomment?chain=4437
Merge pull request #909 from birtles/master

Add initial Web Animations directory and test