Enabled inputOption "multiple" for select

input as="select" now supports multiple-inputOption
Merge pull request #68 from sandreas/sandreas

Enabled inputOption "multiple" for select
Removed the inputConfig
Test against all Ember channels.

* Update `ember-dev` to 56b02fa which allows testing against each of the
  channels via a URL param.
* Add additional suite (`all`) to run against each channel.
* Add `.travis.yml` to override default test script (so we can test against
  each channel in CI only).
Merge pull request #70 from rjackson/test_against_multiple_versions

Test against all Ember channels.
Use nearestWithProperty for finding the wrapperView
Remove unused utility method
Merge pull request #73 from bradleypriest/nearestWithProperty

Use nearestWithProperty for finding the wrapperView
Merge pull request #74 from bradleypriest/remove

Remove objectNameFor which is unused
Extract the label humanising into a utility method
Merge pull request #75 from bradleypriest/humanize

Extract the label humanising into a utility method
Document `as` `checkbox` option for `input-field`
Merge pull request #78 from HeroicEric/master

Document `as` `checkbox` option for `input-field`
Fix Travis failures.

Fixes two issues with Travis:

* Travis has inadvertently reverted to Git 1.7.9.5. This has been
  reported, and the suggested work around was to update git prior to
  running our script.  See
  [here](https://github.com/travis-ci/travis-ci/issues/1710) for details.
* The prior `script` was apparently invalid YAML (the `\[` is interpreted
  as an escape sequence).
* The `ember-easyForm-spade.js` file was not being generated properly
  because `"Ember EasyForm".dasherize` == "ember-easyform", but we
  expect "ember-easyForm". This works fine with the default OS X setup
  since filenames are case-insensitive, but Travis runs on Linux which
  is case sensitive. This was fixed in ember-dev
  [here](https://github.com/emberjs/ember-dev/pull/105).
Allow specifying a name property to {{input}}.
Merge pull request #81 from rjackson/allow_name_property_on_input

Allow specifying a name property to {{input}}.
Merge pull request #80 from rjackson/fix_travis

Fix Travis failures.
Enable compatibility with the default Ember {{input}} helper.

* Move the original `{{input}}` helper to `{{ember-input}}` before
  replacing it.
* If EasyForm's `{{input}}` is used without specifying a propertyId
  use Ember's original `{{input}}` helper (now stored in
  `{{ember-input}}`).
Merge pull request #84 from rjackson/allow_input_without_propertyId

Allow usage of Ember's {{input}} helper.
Added CHANGELOG