Update W18_ideas.md
Update W18_ideas.md
ucsb-cs56-pconrad-mentors/ucsb-cs56-pconrad-mentors.github.io,ucsb-cs56-pconrad-mentors/ucsb-cs56-pconrad-mentors.github.io,ucsb-cs56-pconrad-mentors/ucsb-cs56-pconrad-mentors.github.io