No more 1.9.2
Downsized/consolidated rake stuffs
Clarify that RakeTask will use .tailor
Fixed test for errors
Abort if config file passed in but it doesn't exist
RakeTask now uses CLI.  Closes gh-127

Previously, RakeTask was just reimplementing what CLI is used for, but
wasn't doing it quite right.  Switched to use CLI, which simplifies
RakeTask and DRYs it up.
Don't override log settings