Remove sending a LCOV file to CodeClimate

Because CodeClimate's coverage report requires concatenated kclv.js file for the LCOV file, or an alternative test for independent for original *.js files.
Attach a badge of test coverage

Coverage Status has anchor in not Code Climate but Coveralls. The experts know best.
So, the issue #13 marked again the end of this commit.
Merge branch 'issue/13'