Adding extra team / alumni members

Thanks to @dchelimsky for point out missing people, I'll add them here, still need to add a few more.

Team:
- [x] @yujinakayama 

Alumni:
- [x] Dave Astels
- [x] Aslak Hellesøy
- [x] Chad Humphries
- [x] Pat Maddox
- [x] Luke Redpath
- [x] Justin Ko
- [x] Brian Takita