Merge pull request #1258 from chrishunt/remove-extra-paren

Remove extra '(' in allAreDone example
Add callout for EmberConf on the homepage.
Merge pull request #1259 from rjackson/add-emberconf-callout

Add callout for EmberConf on the homepage.
Make EmberConf logo link to emberconf.com.
Correct GitHub tag for data
Merge pull request #1260 from duggiefresh/master

Correct GitHub tag for data
AFAIK transitionToRoute takes routeName with '.'
Merge pull request #1261 from sabithksme/patch-1

AFAIK transitionToRoute takes routeName with '.'
change to standard jquery ajax call

jQuery.ajax expects (url, settings) as parameters.  The ajax call to /error-notification used (url, type, settings), which generates a 'GET' in latest version of Chrome, even if 'PUT' is given as the second parameter.
Update Person occurrences to App.Person

In some parts of the guide there is a undeclared Person variable, where the expected is App.Person. This cause confusion, for these that are new to ember.
Merge pull request #1264 from marcioj/patch-1

Update Person occurrences to App.Person
Add a recipe for Google Analytics tracking.
Publish 1.4.0-beta.4.
Show correct version on beta progress diagram.
Merge pull request #948 from tmcgilchrist/google_analytics_recipe

Add a recipe for Google Analytics tracking.
fix small typo
Merge pull request #1265 from jasonkriss/patch-2

fix small typo
Added more content
Remove use of term "theoretically"

Usage of the term _theoretically_ here, prior to this PR, suggests that the behavior resulting from use of a name other than `App` is not confidently known function correctly.
Merge pull request #1266 from extemporalgenome/patch-1

Remove use of term "theoretically"