App Transport Security has blocked a cleartext HTTP (http://) resource load since it is insecure. Temporary exceptions can be configured via your app's Info.plist file.
You can solve this problem by choosing 'Disable Application Transport Security' on following iOS Options dialog.
Another solutions are introduced on many websites. following is one of them.
https://teamtreehouse.com/community/20150918-220456167-security-has-blocked-a-cleartext-http-http-esource-load-since