Merged pull request #23

Squashed commit of the following:

commit df77a1ee7b415d4cd8b125405fad44651d81f185
Author: Marcus <mgb.klimstra@gmail.com>
Date:   Sun Oct 12 14:18:52 2014 +0200

    Update README.md

commit c5868e1bf8a995fb058754fb8ad90485718f1dff
Author: Marcus <mgb.klimstra@gmail.com>
Date:   Sun Oct 12 14:16:01 2014 +0200

    Update README.md

commit 29b40cfc14bb9b28e77e7c6b10d0b2b04dad390b
Author: Marcus <mgb.klimstra@gmail.com>
Date:   Sat Oct 11 13:46:11 2014 +0200

    getActualFragmentType: change 'typeKey' to 'type' for symmetry with DS.EmbeddedRecordsMixin?

commit 9e7f1a6e88eeef135abc654fec42de931cea2b89
Author: Marcus <mgb.klimstra@gmail.com>
Date:   Sat Oct 11 13:43:53 2014 +0200

    Revert "Support for writing the polymorphic type key."

    This reverts commit 8d4529afd0dfacc7bc9efe545b6c84e0b8a505ba.

commit 8f90fa55a279d4ba20ad3cc38248b996d2bd1ba1
Merge: 8d4529a 52c029b
Author: Marcus <mgb.klimstra@gmail.com>
Date:   Sat Oct 4 22:33:20 2014 +0200

    Merge branch 'master' of https://github.com/marcus-nl/ember-data.model-fragments

commit 8d4529afd0dfacc7bc9efe545b6c84e0b8a505ba
Author: Marcus <mgb.klimstra@gmail.com>
Date:   Sat Oct 4 22:30:45 2014 +0200

    Support for writing the polymorphic type key.

commit 52c029b5cd94bfe01bac8fa4023aac497537010a
Author: Marcus <mgb.klimstra@gmail.com>
Date:   Sat Oct 4 22:30:45 2014 +0200

    Support for writing the polymorphic type key.

commit d38dea147bd77cc78c185c1c2c199585f014a014
Merge: f202a6a 5ea8ba1
Author: Marcus <mgb.klimstra@gmail.com>
Date:   Sat Oct 4 18:05:53 2014 +0200

    Merge branch 'master' of https://github.com/lytics/ember-data.model-fragments

commit f202a6af18e9a12b7246f809a31a567f880a37ce
Author: Marcus <mgb.klimstra@gmail.com>
Date:   Sat Oct 4 17:51:20 2014 +0200

    Simplify test.

commit 10f2c05415a4c37800a013c5760ebb6f42e2c983
Author: Marcus <mgb.klimstra@gmail.com>
Date:   Sat Oct 4 13:03:59 2014 +0200

    typo

commit ad73c95cdd041d53f1fe960558f4e5614f5d3495
Author: Marcus <mgb.klimstra@gmail.com>
Date:   Sat Oct 4 11:35:24 2014 +0200

    refactor getActualFragmentType to a private helper exported by the fragments/model.js module.

commit 05f2148fdc592207f74740605a280834d310e1a4
Author: Marcus <mgb.klimstra@gmail.com>
Date:   Sat Aug 30 12:14:11 2014 +0200

    Added support for reading polymorphic fragments.
Updated readme w/ serializer instructions, fixed JSON errors, removed trailing whitespace
Released v0.2.2
Merge branch 'master' of https://github.com/lytics/ember-data.model-fragments

Conflicts:
	README.md
	packages/model-fragments/lib/fragments/model.js
	packages/model-fragments/tests/unit/polymorphic_test.js