Added heads up about computed properties to  'marking a model as complete-incomplete' page.

When a person reads this for the first time, he is left wondering why this function calls `property`. Even if there's a resource link in the bottom, it would nice to give a small heads up of whats going on up there.
Swap true result for false on template boolean check

I'm just getting started with Ember, but my results differed from the docs here. Is this right?
added instructure to ember users
hid cookbook from guide
Update link to TodoMVC page
Merge pull request #862 from balinterdi/update-todomvc-link

Update link to TodoMVC page
Update creating_reusable_social_share_buttons.md
Fix integration testing docs on keyEvent

The function is `keyEvent`, not `keyDown`.
https://github.com/emberjs/ember.js/blob/master/packages/ember-testing/lib/helpers.js#L49
Bugfix Setting Computed Properties

The example at "Setting Computed Properties" tries to split a non existing variable fullNameString.
controllers are no more instantiated on App NS
spelling fix
Merge pull request #868 from zzzev/patch-1

Tiny little spelling fix in docs
Update deciding_if_a_recipe_is_a_good_fit.md

update copy.
Update index.md

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Update participating_if_you_dont_know_ember.md

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Update participating_if_you_know_ember.md

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Update suggesting_a_recipe.md

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Update understanding_the_cookbook_format.md

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Added radflex.pt to Ember Users.
Rename linkPrefix to 'channel'.