Removed redundant MacroReflection#klass method definition.
Removed some excessive whitespace.

Removed confusing examples using `composed_of'
Added method: ActiveFedora::Base#required?

Created ActiveFedora::Base#required? which, when given a field name,
tells you if the field is required or not.  It figures this out by
looking for a PresenceValidator (e.g. validates_presence_of) for the
field.

This is useful so that we can create dynamically generated forms and
determine whether any given field is required or not.
Merge pull request #110 from dchandekstark/macro-reflection-klass

Removed redundant MacroReflection#klass method definition.
Merge pull request #111 from projecthydra/required_test

Added method: ActiveFedora::Base#required?
Preparing for the 6.3.0 release
Added accepts_nested_attributes_for on RDFNodes
Merge pull request #114 from projecthydra/rdf_nested_attributes

Added accepts_nested_attributes_for on RDFNodes
Updating travis config as per Travis instruction

"
If you’re seeing problems with Bundler not being installed, please add
this to your .travis.yml:
before_install
  - gem install bundler
"
https://twitter.com/travisci/status/347306657635762176
Delegate all the array methods for RdfNode::TermProxy

This enables calling any array method such as #inject without having to
list all of them in our code.
Merge pull request #115 from projecthydra/delegate_to_array

Delegate all the array methods for RdfNode::TermProxy
Deprecated AF::Base#update_indexed_attributes
Merge pull request #117 from projecthydra/deprecate_uia

Deprecated AF::Base#update_indexed_attributes
Updating "active_fedora:model" rails generator

The `rails generate active_fedora:model CLASS_NAME` command now accepts
additional arguements for customizing the generated active fedora
object.

@WIP - It may be nice to wire this in as a model so we could use
scaffold and resource generators from Rails. Much like rspec allows you
to hook into the models for generation and FactoryGirl allows you to
override the generation of fixtures.

Closes #91
Merge pull request #116 from projecthydra/gh-91-create-model-generator

Updating "active_fedora:model" rails generator
Compatibility with OM 3.0.0.beta2
Bump dependency to om 3.0.0
Merge pull request #118 from projecthydra/om_3

Om 3
We should be able to delete rdf nested attributes.

Because we "mark" the objects for deletion, this change required
that we do not reload the objects from the graph on every read.  Instead
it maintains a cache for the objects returned from the RDF query.
Merge pull request #119 from projecthydra/delete_nested_rdf

We should be able to delete rdf nested attributes.
[RDF] RDF::List supports nested attributes behavior