Merge pull request #174 from opesci/testing-acoustic-born

Travis: Add the full acoustic example to test Born operator

Author: Michael Lange

.travis.yml

@@ -54,5 +54,6 @@ script:
   - py.test -vs tests/
   - python examples/benchmark.py test -P tti -a -d 20 20 20 -n 5
   - python examples/benchmark.py test -P acoustic -a
+  - python examples/acoustic/acoustic_example.py
   - py.test -vs examples/diffusion/example_diffusion.py
   - if [[ $TRAVIS_OS_NAME == 'osx' ]]; then ./docs/deploy.sh; fi