Fixes issue #134
Added Breadcrumbs.php
Merge branch 'master' of https://github.com/yiisoft/yii2
Fixes issue #54: Implemented Breadcrumbs.
Refactored Breadcrumbs.
upgrading instructions WIP
Menu WIP
Fix attaching behavior via config
Changed default value of View::renderers.
Fix attaching behavior via config
Merge pull request #147 from slavcodev/bug#146

Fix attaching behavior via config
Finished the initial draft of upgrading instructions
Merge branch 'master' of https://github.com/yiisoft/yii2
Fixed doc about renderers.
Added dirty attribute description.
Added namespace section.
Renamed YiiBase to \yii\YiiBase.
Merge branch 'master' of https://github.com/yiisoft/yii2
Controllers section example fix
Fixed typo