Merge pull request #5 from julianduque/master

Update Medellin
SF confirmed at Adobe SF
Add Denver
Merge pull request #6 from mharsch/master

Add Denver!!
Adds some logistical and equipment info for organizers
added rick
Merge pull request #7 from dshaw/rick

added rick
Update Readme.md
Added Las Vegas!
Update Readme.md
Merge pull request #8 from makenai/master

Please Add Las Vegas :)
Update Medellin event information