// WriteFile writes 'data' to the file 'filename' with the given permissions.
func WriteFile(filename string, data []byte, perm os.FileMode) error {
a := afero.Afero{
Fs: AppFs,
}
return a.WriteFile(filename, data, perm)
}
func overwrite(file string, message string) error {
a := afero.Afero{
Fs: appFs,
}
return a.WriteFile(file, []byte(message), 0666)
}