Minor update to README.md

Signed-off-by: Michael Greenhill <doctorjbeam@gmail.com>
Added apt-get to travis-ci config

Signed-off-by: Michael Greenhill <doctorjbeam@gmail.com>
Added BreadcrumbTest back into repo for Travis-CI testing

Signed-off-by: Michael Greenhill <doctorjbeam@gmail.com>