Verbose contributing steps

MSP-10039
Fix formatting

MSP-10039
Update name to SUMMARY in Versioning

MSP-10039

The branch SUMMARY, not the entire name is used for PRERELEASE.
Include section on changing PRERELEASE when DESTINATION is master

MSP-10039
Add distinct Post-merge Steps template for master

MSP-10039
Fix copy & paste error

MSP-10039
Fix copy & paste error

MSP-10039
Include how to add PRERELEASE when branching from master

MSP-10039
Update PRERELEASE to match branch

MSP-10039
Increment PATCH for compatible changes

MSP-10039
Fix typo

MSP-10039
Moving README's Contributing section to its own file

MSP-10039
Move version bump to Release steps

MSP-10039

This way it is the responsibility of a trusted contributor to change the
version instead of the pull requester.
Fix Typo

MSP-10039
Merge pull request #16 from rapid7/feature/MSP-10039/readme

Update README with verbose Contributing section