add .kitchen to gitignore
add 'test' sub-command to berkshelf

this is completely provided by mounting test-kitchen into Berkshelf
update help info for 'test' command
only enable test kitchen if we have the test kitchen env_var set to 1
run test-kitchen generator in InitGenerator
cleanup formatting of init generator
refactor inclusion of Test command in CLI
use 1.0.0.alpha6 of test kitchen