#NSString+CJStringValidator
NSString category to help the validate formate string.
##Example usage
Is e-mail:
NSString *mail = @"jeremy@opsone.net";
NSLog(@"%i", [title isEmail]); // return YES
Is phone number:
NSString *phone = @"0102030405";
NSLog(@"%i", [phone isPhoneNumber]); // return YES
Is digit:
NSLog(@"%i", [@"12" isNumeric]); // return YES
NSLog(@"%i", [@"12.2" isNumeric]); // return NO
NSLog(@"%i", [@"12,2" isNumeric]); // return NO
NSLog(@"%i", [@"abc" isNumeric]); // return NO
Is numeric:
NSLog(@"%i", [@"12" isNumeric]); // return YES
NSLog(@"%i", [@"12.2" isNumeric]); // return YES
NSLog(@"%i", [@"12,2" isNumeric]); // return YES
NSLog(@"%i", [@"abc" isNumeric]); // return NO
Is url:
NSString *url = @"http://apple.com";
NSLog(@"%i", [url isUrl]); // return YES
Is min length:
NSString *string = @"My title";
NSLog(@"%i", [string isMinLength:2]); // return YES
Is max length:
NSString *string = @"My title";
NSLog(@"%i", [string isMaxLength:8]); // return YES
Is min length and max length:
NSString *string = @"My title";
NSLog(@"%i", [string isMinLength:2 andMaxLength:4]); // return NO
Is empty:
NSString *user = @"Jeremy Chaufourier";
NSLog(@"%i", [user isEmpty]); // return NO