Update stacks_4_populations.sh
Update stacks_8_populations_rx.sh
Update 01-stacks.rst
Update 02-Step_2.rst
Update 08-Step_8.rst
Merge branch 'thierrygosselin-patch-1'
Merge branch 'thierrygosselin-patch-2'
Merge branch 'patch-3' of https://github.com/thierrygosselin/stacks_workflow into thierrygosselin-patch-3
Merge branch 'thierrygosselin-patch-3'
Merge branch 'patch-4' of https://github.com/thierrygosselin/stacks_workflow into thierrygosselin-patch-4
Merge branch 'thierrygosselin-patch-4'
Merge branch 'patch-5' of https://github.com/thierrygosselin/stacks_workflow into thierrygosselin-patch-5
Merge branch 'thierrygosselin-patch-5'
Updated documentation