Support fadein. Resolve #62.
Apply https://gist.github.com/Ghabry/7860354a515f17a6b343 .
Revert .travis.yml to cmake version since autotools won't test.
Fix filefinder test failure.
Merge pull request #222 from take-cheeze/fadein

Support fadein. Resolve #62.
Merge pull request #234 from take-cheeze/enable_test

Revert .travis.yml and fix filefinder test.