init commit
add readme
remove console.log
fix multiple sequence of operations
dev
new method
new method work find
final version
fixes
new aproach
fix problems with 0....
require.js (CommonJS) version
buttons redesign
optimize code
require.js (CommonJS) version
Merge branch 'requirejs' of https://github.com/eugeneglova/backbone-calculator into requirejs

Conflicts:
	index.html
	js/models/button.js
	js/views/app.js