For Travis CI - change to use git fetch 'unshallow' instead of 'depth'.
The hard-coded depth=2000 may not be a good estimate of how deep we should go in order to get the last annotated tag. Also move the operation to 'ci' rake task so it can be shared for all the Travis-CI build environments.
Remove bom(b) from Readme.txt and update the project tagline.
For Travis CI - switch CI build to use Raspberry-Pi build environment.