Update README.md

This isn't happening
upgrade to ember rc2
Merge pull request #17 from delwyn/rc2

upgrade to ember rc2
remove check for undefined as ember data sets errors to null
use Ember.isNone
Merge pull request #18 from delwyn/ember-data

Ember Data Errors
fix number test
render boolean attributes as checkbox
Merge pull request #19 from delwyn/boolean

render boolean attribute as checkbox
Merge pull request #20 from delwyn/number

fix number test
Only display errors span below input when there are errors
Gah! typo
Merge pull request #21 from superchris/conditional_error_span

Only display errors span below input when there are errors
upgrade to ember rc3
Merge pull request #22 from delwyn/rc3

upgrade to ember rc3
IE8 doesn't support reserved words as property names (using dot notation)
basic select functionality
get select working with selectionBinding and valueBinding
Merge pull request #24 from delwyn/select

Select Input
Fix typo in README