Builds began failing on Travis CI with the following message:
Gtk-WARNING **: cannot open display:
This is because of tests like ViewLoaderTest, which now initialize the
JavaFX toolkit and expect a display in the process. This change starts
an Xvfb server (conveniently already available under Travis CI) in order
to provide a lightweight X11 environment and eliminate this problem.
The Gradle JavaFX plugin requires Oracle JDK 8u20 or better. Travis CI
currently runs something older, and does not have a roadmap for
upgrading. This commit instructs the Travis CI VM to install JDK 8u20
via `apt` prior to actually beginning the build.
See #66
- Send notifications to #bitsquare instead of #bitsquare.io
- Skip join to cut down on noise (now that -n flag has been removed)
- Only notify on failures and first success
See #86