add first draft of travis-ci config file
create build dir before building arx
sent email on every build
send mail on every failing build or if success state changes; replace mail adress with dummy
Merge branch 'master' of https://github.com/hennr/ArxLibertatis
Tweak Travis CI configurations

- Don't make parallel for more readable logs
- We don't have a mailing list, so use IRC instead
Merge branch 'master' into cleanup