fix #445 - observe used by doc comment was shadowing the function

Review URL: https://chromiumcodereview.appspot.com//13427017
release 0.4.5 (update pubspec and changelog)
example tweaks
Merge pull request #452 from kevmoo/master

Tweaks to TODO MVC example
add $index, fixes #277

Review URL: https://chromiumcodereview.appspot.com//13915003
TODO MVC - while I'm at it
Merge pull request #453 from kevmoo/master

TODO MVC: while I'm at it...
Readme fixes

Closes #455
Points to new github.io domain for gh-pages
Added self to AUTHORS
fixed analysis errors in explainer code
explainer: fixed reference to bootstrap css
Merge pull request #457 from kevmoo/explainer_fixes

Explainer fixes
Merge pull request #456 from kevmoo/master

Readme, author fixes
fix two way binding for selectedIndex and other fields
In general, we were quite confused about bind- fields, since they were added to the "attributes" dictionary but they had already been camelCased.

Review URL: https://chromiumcodereview.appspot.com//14121018
Upgrading web_ui to 0.4.6

Review URL: https://chromiumcodereview.appspot.com//13999004
Add order dependant map watchers
Merge branch 'master' of https://github.com/dart-lang/web-ui