add .travis.yml

Signed-off-by: Julz Friedman <julz.friedman@uk.ibm.com>
add travis badge to README

Signed-off-by: Julz Friedman <julz.friedman@uk.ibm.com>
Added a sink for testing purposes.
make it really easy to put gosteno in testing mode
singletons beget singletons
EnterTestMode gets even better

Signed-off-by: Michael Fraenkel <fraenkel@us.ibm.com>