Update Knockout.js sample to use features from 2.0.0

Add custom binding to handle the enter key, rather than checking the keycode in the view model - fixes issue #4

Resolving floating problem from issue 21.

revisions to index to cleanup some recent prs, prevent ember and sammy from initializing with a demo first task/todo

Ember.js Clear Completed Tasks Update

Resubmission of Knockback including an upgrade of Knockout to 2.0.0

Fix up Backbone.js with RequireJS

Did some fixes to the ember.js app.

This is probably not the most graceful implementation, but it should get the job done for the time being.

Separate storage fix

Remove tight coupling between model and view.

Use the normal event bindings to perform the close/blur event.  Set content directly in the template.

Prevent backbone.js example from unnecessarily polluting the global namespace.