* Work on PT-2029 started
* PT-2029: Polished Perl and Bash related instructions in CONTRIBUTE.md
* PT-2029: restructure for CONTRIBUTE.md
* PT-2029: more structure changes for CONTRIBUTE.md
* PT-2029 - added Go content to CONTRIBUTE.md and removed from README.md,
reorganized CONTRIBUTE.md: removed duplicate content, added Go and documentation related stuff