Updates the GS:Experiments document with the new GS-Experiments project#2491

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iesahin wants to merge 2 commits intoiterative:masterfrom iesahin:iesahin/revise-gs-experiments-commands

+213-110

Commits on May 17, 2021

some changes for the first 2 subsections and identified requirements for experiments branch
iesahin
committed

Commits on May 19, 2021

updated dvc exp commands with the new gs project
iesahin
committed