Less hipster generate_keys
Secure keys’ permissions
Increase key size 

Fixes #23
Don’t use temp file
Abort on any error
Show priv key in Finder
Dehipsterify sign_update
Add error handling to sign_update
Rename scripts
Merge pull request #25 from GabrielUlici/master

Updated the Romanian Translation and added some mac models to the SUModelTranslation.plist