Update creating-a-new-model.md

Defined property `newTitle` on `TodosController` with default value of empty string. Without this, line `if (!title.trim()) { return; }` will throw _Uncaught TypeError: Cannot call method 'trim' of undefined_ when trying to submit an empty string.
Update the-rest-adapter.md

Plurals dealing with an API need to be underscored.
Add cookbook section
Add some additional information about the filterProperty and invoke methods.
update checkbox binding logic error

if isAdministrator is false, then checkbox is disabled, not the other way.
added sorting to array controller guide
Revert to rc3 to GSG
Merge pull request #606 from trek/revert-to-rc3

Revert to using RC3 until known matching data SHA
Remove reference to `template` helper.

Seems unnecessary. Plus, if you use `template`, you'll get
an Ember.warn
update home page to be clear ember is 56kb minified + gziped
Merge pull request #607 from machty/deprecate-template

Remove reference to `template` helper.
[fixes #608] fix some typos.

thanks @shellyan for pointing them out.
In routing, add description of initial routes.
Merge remote-tracking branch 'upstream/master'
added a deeply nested route example
Update redirection.md

transitionTo is deprecated, updating to transitionToRoute for Ember 1.0.0-rc.6.1
Merge pull request #612 from jmsalcido/patch-1

Update redirection.md
Fixing issue #613

Problem to open "Passing Properties to a Component" Documentation Page.
Correcting the spell mistake
Merge pull request #614 from VinayBHiraskar/patch-1

Fixing issue #613
When using imports, make sure to import console