Merge pull request #85 from warrenseymour/master

Fix name of Bitcoin talk
removed _config.yml as auto is not a switch 'jekyll server -w'
added may summary, and placeholder for june
Merge pull request #86 from unified-diff/june-placeholder

may/june infos
June lineup
Merge pull request #87 from unified-diff/june

June lineup
Remove hardcoded data
Remove 'tendin code
Load event and rsvp data
Update URLs
Initialise variables
Merge pull request #88 from craigmarvelley/meetup-integration

Meetup.com integration
Add location to events
Merge pull request #89 from gavD/master

Add location to events
Fix location to Founders Hub
Filter out attendees with a no response
Merge pull request #90 from jenkoian/fix-tendees

Filter out attendees with a no response
Update README
Merge pull request #91 from jenkoian/docs

Update README
Load default thumbnail if none exists