add Travis-CI support

For [Travis-CI](travis-ci.org) to work properly, a python project needs 2
files. These 2 files were added here with a minimal configuration for Travis to
pass it's builds.

Implements Issue #19.

Signed-off-by: Erik Bernoth <bernoth@dresearch-fe.de>
Acked-by: Steffen Sledz <sledz@dresearch-fe.de>
Acked-by: Eik Binschek <binschek@dresearch-fe.de>
Merge branch 'f-add-travis-support-v2' into dev

Merged Issue #19