Try to implement code coverage output in Travis.
Add lcov.
Try to the right version of gcov.
Try to use the right version of gcov.
Try to use the right version of gcov.
Try to use the right version of gcov.
Try to use the right version of gcov.
Try make code coverage work.
Try make code coverage work.
Try make code coverage work.
Try make code coverage work.
Try make code coverage work.
Clean (a bit) code coverage related commands.
Merge pull request #27 from dchilot/feature_travis_coverage

Feature travis coverage