add Ember.computed.defaultTo
Added ability to customize generated controllers and routes
Added length property to Ember.Map
Fix render helper with model when used multiple times
allow tag for tagName in the view helper
Remove unnecesaries
Merge pull request #2278 from tricknotes/remove-unnecessaries

Remove unnecesaries
Fix typo and remove unused variables
Merge pull request #2279 from JasonKriss/unused-vars

Fix typo and remove unused variables
Merge pull request #2182 from teddyzeenny/custom-generated

Added ability to customize generated controllers and routes
Added readOnly flag to computed.alias.

Aliasing properties is powerful, to some peoples
surprise they alias in both direction (set and get).
Usually this is the behaviour one wants but sometimes,
as
https://github.com/emberjs/data/commit/7b88a92c090dddf2d554fb4d4095322f9eef8a59
suggests, this behaviour
is not always wanted.

When the read only flag is flipped on, a set will
throw and Error. Preventing the set, and providing
useful feedback.
Merge pull request #2284 from stefanpenner/master

computed.alias gets optional readOnly flag
Ember.Computed(function(){ }).readOnly()

Now anyone computed property can be made readOnly
Remove special case readOnly for computed.alias.

Prefer the computed property wide readOnly method.
Merge pull request #2285 from stefanpenner/master

Real readOnly computed properties.
Return merged object from Ember.merge
Add `pattern` to document about binding property

`Ember.TextField` supports `pattern` as its binding property.
Merge pull request #2290 from tricknotes/fix-doc

Add `pattern` to document about binding property
Fix document indent
Merge pull request #2291 from tricknotes/fix-document-indent

Fix document indent