Added files for CMake, CI and coverage

[liyier90]

Some additional configuration is needed to set up CI and coverage for the repository under the lab's account.

The submodule can be updated to the lab's repo (if preferred) after setting up UnitTest-cpp for CMake with this PR.

Since I do not have access to the lab's GitHub account, the URLs for badges in README.md and the
Repository Upload Token (the 30ccfca2-... string) in .travis.yml will need to updated.

[cla-bot]

Thank you contributing to this ComputationalBioLab project. We require contributors to sign our Contributor License Agreement, and we do not have one on file for @liyier90. In order for us to review and merge your code, please sign our CLA: https://computationalbiolab.github.io/assets/cla/IndividualContributorLicenseAgreement.pdf and send it back to us to get yourself added.