DYEBench spits out 404 errors for learn.json
https://bugs.webkit.org/show_bug.cgi?id=133416

Reviewed by Oliver Hunt.

Add an empty learn.json file so that it won't cause a 404 error when hosted on a http server.

Bumped the version number to 0.12.

* DoYouEvenBench/Full.html:
* DoYouEvenBench/resources/todomvc/learn.json:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@169502 268f45cc-cd09-0410-ab3c-d52691b4dbfc