Provide the totalTime at the top level of the `Builder::build` output.
Provide the totalTime at the top level of the `Builder::build` output.

Also, removes the crude timing that is hung off of the `Builder`
instance itself.

ixisystems/broccoli,osxi/broccoli,broccolijs/broccoli,ixisystems/broccoli,osxi/broccoli,broccolijs/broccoli,ember-cli/broccoli,osxi/broccoli,ember-cli/broccoli,ember-cli/broccoli,gabesoft/broccoli,broccolijs/broccoli,gabesoft/broccoli,gabesoft/broccoli,broccolijs/broccoli