Fix AMD tests. jQuery is modern enough that we dont need a shim. Remove JSLitmus, and add in stubbed xhr environment file
Add jQuery as a commonjs import
Merge pull request #2860 from akre54/fix-amd-tests

Fix AMD tests
Merge pull request #2862 from akre54/commonjs-imports

Add jQuery as a commonjs import
Fixes #2836 -- default to id if there's funny business going on with a missing idAttribute
Merge branch 'master' of https://github.com/jashkenas/backbone