fix for issue #6
fix for issue #6

Removed the last 4 array components from the sha1 call.

jlukanta/mixpanel-iphone,senselabs/mixpanel-iphone,senselabs/mixpanel-iphone,jlukanta/mixpanel-iphone,mman/mixpanel-osx-unofficial,tisohjung/mixpanel-iphone,senselabs/mixpanel-iphone,bloom/mixpanel-osx-unofficial,jlukanta/mixpanel-iphone,orta/mixpanel-osx-unofficial,senselabs/mixpanel-iphone,senselabs/mixpanel-iphone,vojto/amplitude-osx,orta/mixpanel-osx-unofficial,mman/mixpanel-osx-unofficial,senselabs/mixpanel-iphone