update the readme to tell that this repo is the canonical one.
update the readme to tell that this repo is the canonical one.

kfractal/envytools,karolherbst/envytools,grate-driver/envytools,karolherbst/envytools,grate-driver/envytools,envytools/envytools,envytools/envytools,karolherbst/envytools,kfractal/envytools,grate-driver/envytools,kfractal/envytools,MoochMcGee/envytools,karolherbst/envytools,envytools/envytools,MoochMcGee/envytools,MoochMcGee/envytools,grate-driver/envytools,pierremoreau/envytools,pierremoreau/envytools,kfractal/envytools,pierremoreau/envytools,MoochMcGee/envytools,envytools/envytools,hakzsam/envytools,karolherbst/envytools,kfractal/envytools,hakzsam/envytools,grate-driver/envytools,MoochMcGee/envytools,hakzsam/envytools,envytools/envytools,hakzsam/envytools,pierremoreau/envytools,pierremoreau/envytools,hakzsam/envytools