Include self hosted coverage and code analysis tools

[a-t-0]

Inspired by: https://github.com/openmrslab/suspect One would like to be transparent about:

• [ ] Build status (WIP)
• [ ] Code coverage
• [ ] Maintainability
• [ ] ... To self-host these tools, one can look into equivalents of:
• https://coveralls.io/ or codecov.io at: uncov and check if it supports Bash additional alternatives may be listed here or one can look into the self-hosted enterprise version of coverals as mentioned in their docs.
• Code Climate No open source self-hosted alternatives are found, however it currently seems to be possible to apply it to your own open source GitHub repositories for free.

[mohitsaxenaknoldus]

I'll try to do each one of them one by one and open PR's for the same.

[a-t-0]

Wonderful! For completeness, I am working on the build status, so you can ignore that. Implementing the code coverage tests and badges and/or maintainability badges would be awesome!