Added notes for week0
Added notes for week0 and fixed a typo
Merge pull request #3 from pliu131/week0

Add notes for week 0
formatting changes to week 0
changes to the workshop notes style
Update welcome document

I reviewed the Welcome to BU document and made some changes (grammatical and content-wise). I tried improving on some of the descriptions of things to make them more user-friendly, and slightly more descriptive.

Hopefully, this is a bit more in the right direction. If it's not, we can revert later.
change the announcement
publish old workshop notes
add namecheap logo to sponsors page
add info on the portfolio contest
change the announcement text
add some more info on the hackathon
add more content and moes to the sponsor page
updated workshop schedule