Add utf-8 non-control chars validator

1 files changed, 5 insertions, 0 deletions

diff --git a/README.md b/README.md
index 875f066..c422248 100644
--- a/README.md
+++ b/README.md
@@ -255,6 +255,11 @@ Examples:
 #[validate]
 ```
 
+### non_control_character
+Tests whether the String has any utf-8 control caracters, fails validation if it does.
+To use this validator, you must enable the `unic` feature for the `validator_derive` crate.
+This validator doesn't take any arguments: `#[validate(non_control_character)]`;
+
 ## Struct level validation
 Often, some error validation can only be applied when looking at the full struct, here's how it works here: