Update CHANGELOG
Bump version
Add info on sending underscored JSON for create/update operations

In 0.13 the REST Adapter would send underscored JSON for create/update
requests.  Beginning in Beta 1 the REST Adapter sends camelized JSON.

This PR updates TRANSISTION.md to show how to get back to underscores.
add inflector rule addition DSL

(@hjdivad / @stefanpenner)
inflector docs
adding unloadAll method for store

also includes test for said method and a test for unloadRecord
Merge pull request #1264 from stefanpenner/inflector-rule-addition-dsl

Inflector rule addition dsl
unload data in store directly
Merge pull request #1265 from iterion/unload-all

Adding unloadAll method for store
Ability to serialize null belongsTo
Infer type of a hasMany relationship from the relationship's key
Make type-inferring of hasMany relationship work with options
Ensure license and version are in all builds.
Merge pull request #1277 from rjackson/add_version_info_to_prod_builds

Ensure license and version are in all builds.
Merge pull request #1258 from balinterdi/intuit-has-many-type

Infer type of hasMany relationship from the key
Merge pull request #1272 from teddyzeenny/serialize-belongsto

Ability to serialize null belongsTo
Add serializePolymorphicType hook and move it from
the JSONSerializer to the RESTSerializer
Document serializeIntoHash method
Add ActiveModelAdapter and Serializer
Document the AMS adapter