Add Travis CI configuration for creaper

[kwart]

This also requires enabling access to the repository in the Travis CI.

https://travis-ci.org/profile/wildfly-extras

@Ladicek Could you enable it?

[Ladicek]

What is it going to do? I'd like mvn clean verify.

[kwart]

https://docs.travis-ci.com/user/languages/java

We can specify steps, by default it does

mvn test

and before running the build, Travis CI installs dependencies:

mvn install -DskipTests=true -Dmaven.javadoc.skip=true -B -V

[kwart]

Are there any integration tests, so the verify is required? Or do we have just unit tests and the test phase is enough?

[Ladicek]

OK, my Travis skill is zero, could you please make it do verify? Static checks are done in that phase (CheckStyle, Findbugs, CodeNarc).

[kwart]

Updated.

[Ladicek]

OK, thanks. Looks reasonable, not sure how to test it other than merging this :-)