Will it need the endless list of permissions like it does on Android? It seems to want access to my entire phone, life, brain patterns and toilet usage patterns.
In all seriousness, there is no indication as to what a desktop app is accessing or doing, and given the extensive "fingers in all pies" access that the Android one has, I wouldn't be quick to install a Facebook native app on my desktop!
That makes sense, since database.yml is not going to contain any sensitive data anymore (passwords and usernames will be stored in secrets.yml), this file can be safely stored in repository.
