Fixed score exception raising. Removed import in util.jl.
Added tests for abstract learner and utils. Added FactCheck and Fixtures to REQUIRE.
Added tests to all relevant classes. Numerous patches.
Updated REQUIRE.
Minor clean-up.
Updated contribution guideline.
Fixed README
Added test runner.
Rename of test runner.
Reorder of tests.
Updated travis config.
Merge branch 'feature/testing' into develop
Added testing to all relevant files. Test runner and Travis config built. Minor touch-ups.