Changed method of requesting many records

Before this commit, multiple records are queried
using `/users?ids=1,2,3` syntax, which uses the
Index route in fortune. This route might be absent
if `.noIndex()` has been called.

With this commit the Fortune and JSONAPI-conformant
method of requesting by joining the ids with commas
is used: `/users/1,2,3`.
Merge pull request #10 from thriqon/master

Changed method of requesting many records
Fixed normalizePayload, extractMeta & extractLinks for json-api url shorthand style. 

The current versions of the DS.RESTAdapter and DS.RESTSerializer call normalizePayload with only 1 parameter. I removed `type` parameter to fix this.

I am trying to implement this http://jsonapi.org/format/#document-url-template-shorthands, but I didn't try if this change breaks another of the JSON API formats.
Unfortunately there are no tests for this project at the moment.
Merge pull request #11 from mphasize/master

Fixed normalizePayload, extractMeta & extractLinks for json-api ...
Merge remote-tracking branch 'daliwali/master'