 
 /// Strength of password. There are five levels divided by entropy value.
 /// The entropy value is evaluated by infromation entropy theory.
-public enum NJOPasswordStrength {
+public enum PasswordStrength {
     /// Entropy value is smaller than 28
     case veryWeak
     /// Entropy value is between 28 and 35

        }
    }

    private class func NJOEntropy(for string: String) -> Float {
        guard string.characters.count > 0 else {
            return 0.0
        }

    /// - parameter password: Password string to be calculated
    ///
    /// - returns: Level of strength in NJOPasswordStrength
    open static func strength(ofPassword password: String) -> PasswordStrength {
        return passwordStrength(forEntropy: entropy(of: password))
    }

    /// Converts NJOPasswordStrength to localized string.
