Merge pull request #9 from dbeyer/master

Update on ETAPS (Swap two talks)
Remove index version. Rather than incrementing this manually, update.sh updates the file with each pull (assuming a pull actually changes the data). The index version in EventIndex still needs to be updated.
ignore IndexVersion.json
update readme
FORTE'13 added
Merge remote-tracking branch 'upstream/master'
Small typo fix in README.md