Prepared release 0.2.5.0

Use older distro to get jdk8 support on travis

Update README.md

Final version for PhD thesis 2016.

Merge pull request #53 from TCMBoby/master

general improvements

fixed MORE layout bugs visible in PhD screenshots

Merge branch 'master' of github.com:miho/VWorkflows

Automatic Layout

- automatic-layout support (see issue #34) as incubating feature
  (uses JUNG library). (by @TCMBoby)
- minor API changes that simply custom skin creation and reduce code
  redundancy    (by @aalmiray)

Update version-info.gradle

Update publishing.gradle