added Travis CI config
stop ant build if unit-tests fail
fixed start_node command in README
another README fix for start_node
fixed lib paths and removed standard rwth server
removed unnucessary lines in build.xml
fixed wrong paths in unittests
fixed path to Envelope test xml
deleted test stub files
fixed build order in build.xml
Included Travis-CI status in README
added oraclejdk to travis-ci config