Add Travis CI :D
Use rootKey in toJSON if available
Merge pull request #85 from darthdeus/root-key-in-json

Use rootKey in toJSON if available
Add getAttr hook, which is called when attribute is fetched
Merge pull request #87 from drogus/get-attr

Add getAttr hook
Only findMany ids which aren't in the identity map
Merge pull request #88 from darthdeus/smart-find-coalescing

Only findMany ids which aren't in the identity map