ported all markdown files to YAML
fixed open innovation
removed extra whitespace from the hand-edited file
added end dates for Devconf.cz and FOSDEM
removed years from conference titles
renamed RDO hangouts
removed year from LGM
Merge pull request #76 from OSAS/YAML

ported rh-events data to YAML
Create LICENSE.md
Update README.md
add validation based on Kwalify (closes #77)
add documentation for validation (#77)
capitalize P in Perth
Adding Ghent Infrastructure.Next event