Compile to build/ and remove artifacts
Remove old gitignores
Remove stats task
Only ignore folders in /

[ci skip]
Merge branch 'master' into remove-artifacts

Conflicts:
	lib/batman.jquery.js
	lib/batman.js
	lib/batman.solo.js
	lib/batman.testing.js
	lib/extras/batman.i18n.js
	lib/extras/batman.paginator.js
	lib/extras/batman.rails.js
	lib/extras/batman.test_case.js
	lib/extras/testing/controller_test_case.js
	lib/extras/testing/model_expectations.js
	lib/extras/testing/model_test_case.js
	lib/extras/testing/test_case.js
Merge branch 'master' into remove-artifacts
Add build instructions to the readme
Merge pull request #864 from batmanjs/remove-artifacts

Compile to /build/ and remove artifacts