Merge pull request #2 from dohzya/master

Improve links' style
Update hackday description
Merge branch 'master' of github.com:Zengularity-Hackday/Zengularity-Hackday.github.io
Put the hackers data in specific file
Add @greweb projects
Add more hackers
s03e02_byog: Add image
Remove useless console.log
Fix projects' images
Fix projects.yaml

- makes it cleaner
- uses local images
- makes the description works