update in INSTRUCTIONS.md, (1) Typos, (2)clarification in Muse models and (3)indication of other potential devices for the workshop
update in INSTRUCTIONS.md, (1) Typos, (2)clarification in Muse models and (3)indication of other potential devices for the workshop

bcimontreal/bci_workshop,bcimontreal/bci_workshop,bcimontreal/bci_workshop