Add tests for calling jQuery.ajax from DS.RESTAdapter
Fix: unload record with relationships

- calling `clearRelationships` before changing record state,
  otherwise it fails, because properties try to update removed
  relationships

- Transaction commit failed when an unloaded record was in the
  `transaction.bucketForType.updated` array. Using recordIsMoving fixed
  this issue
fix test description
fixed issue #582
added adapter integration test for dirtyRecordsForAttributeChange
Add live query test for RecordArray
Remove unused method

DS.Model#setProperty is no longer working.
pushData and load now call loadData instead of duplicating code
automatically publish passing master branch builds to s3

This commit will publish passing builds of the master branch to s3 for
convenient downloading.

Files created if the build is successful:
ember-data-latest.js
ember-data-latest.min.js
ember-data-<revision>.js
ember-data-<revision>.min.js

Any *-latest*.js files will be overwritten to the build that passes and
runs `rake publish_build`.

To add credentials to your travis instance:

gem install travis
travis encrypt S3_ACCESS_KEY_ID=yourkey --add
travis encrypt S3_SECRET_ACCESS_KEY=yourkey --add

You'll also need to update the S3_BUCKET_NAME=yourbucketname in
.travis.yml
unify the way adapter methods are asserted
Enforce more methods on serializer

* extractId
* extractAttribute
* extractHasMany
* extractBelongsTo
* createSerializedForm
* addId
* addAttribute
* addHasMany
* addBelongsTo
Only enforce invariants for materialized records

If a record is deleted, its has-many relationships
are cleared. Previously, the inverse on all of the
child records (their "foreign keys") were nulled
out.

Unfortunately, this was also happening when the
has-many array had not been materializing—meaning
that deleting a record could actually cause all
of the records in its has-many relationships to
be retrieved from the adapter!

This commit only implements the above-described
behavior in instances where the has-many
relationship has been materialized. In cases where
it has *not* been materialized, only those records
which have already been coincidentally materialized
on the client have their inverse cleared, to
preserve the correct state on the client. For
unmaterialized records, we assume the adapter (or
more likely, the server, in the case of REST) will
be responsible for maintaining the invariant.

Also, this fixes the previous failing unit tests.
Sorry about that.
Merge pull request #856 from tchak/adapter-asserts

unify the way adapter methods are asserted
Make Ember.assert statement a single line

Otherwise it won't be removed for a production build.
Merge pull request #846 from igorT/refactor_load_data

pushData and load now call loadData instead of duplicating code
Merge pull request #441 from mhelabs/rest_adapter_ajax_tests

Add tests for calling jQuery.ajax from DS.RESTAdapter
Merge pull request #567 from ppcano/unload-fix

Fix: unload record with relationships
Merge pull request #664 from logical42/master

fix test description to match what is actually being tested
Merge pull request #850 from fivetanley/travis-ci-publishing

automatically publish passing master branch builds to s3
Configure Travis for deploying S3 builds