introduction of RHEL spec files and related stuff

Things modified/added:

- added rpmbuild SPEC files, init file and folder hierarchy for RHEL distros in rhel folder
- organized the preexisting OpenSUSE spec file into a separate folder by its name
- added README on how to rpmbuild on RHEL
- expanded quick start README with relative build info on RHEL 
- and properly formatted the quick start README to make it easy on eyes ;)

Thanks.
P.S. Graham, you are a huge inspiration. Burp motivated me to learn C.