Merge pull request #383 from micheldumontier/release3

updates
replaced faulty readdir with glob; added empty check in event finder
fixed bug in parsing overall status
Merge pull request #384 from micheldumontier/release3

clinicaltrials: fixed bug in parsing overall status
Merge pull request #385 from micheldumontier/clinicaltrials

replaced faulty readdir with glob; added empty check in event finder
updated to use new API
Merge branch 'sgd' of github.com:micheldumontier/bio2rdf-scripts into sgd

Conflicts:
	sgd/sgd.php