translate 2.1 and 2.2
translated ~2.4
translated
translated section 2
fix markdown
Translated "Application Architecture Model View Whatever and Backbone"
Merge pull request #2 from enja/working

Translated "Backbone Prerequisites"
draft translation is done
add part2 outline
add part2 Article Overview
add Part.2 Backbone.View
add "Conclusion"
add "Building A Simple Contacts Application"
add "Backbone.Collection"
add "Backbone.Model"
add draft translation for 05
Merge branch 'master' of github.com:enja/howto
add draft translation: 06
add transition of "Article Overview" of Part2