Re-add timeout cap and adjust publicdata.eu limit

Apparently, publicdata.eu can be easily harvested again by simply
reducing the request limit from 1000 to 250. Also re-added the t/o
cap.

Signed-off-by: Konrad Reiche <konrad.reiche@gmail.com>
Add Travis CI configuration file

Since I have written unit tests for this project I will now add this
project to Travis CI, too.

Signed-off-by: Konrad Reiche <konrad.reiche@gmail.com>