added chapter 3
chapter 4
Merge branch 'extjs-5.0.0' of https://github.com/loiane/masteringextjs into extjs-5.0.0

Conflicts:
	.DS_Store
	app/Application.js
	app/view/login/CapsLockTooltip.js
	app/view/login/Login.js
	app/view/main/Main.js
	bootstrap.json
	build/development/Packt/resources/Packt-all.css
	build/temp/development/Packt/sass/Packt-all.scss
	build/temp/development/Packt/sass/Packt-all.scss.tmp
Merge remote-tracking branch 'origin/extjs-5.0.0' into extjs-5.0.0