chore: update README.md - list main feature

README.md

@@ -12,6 +12,17 @@
 of sensitive information. Through advanced reflection and specialized formatters, it provides precise,
 easily readable output. Ideal for safeguarding confidential data or enhancing data presentation in Go projects.
 
+### Features
+
+- [x] Struct formatting with a default values masking of all the fields (recursively).
+- [x] Strings values masking based on provided regexp patterns.
+- [x] Wide range of supported types:
+    - `struct`, `map`, `slice`, `array`, `pointer`, `string`,
+    - `float64/float32`, `int/int8/int16/int32/int64/rune`,
+    - `uint/uint8/uint16/uint32/uint64/byte`, `bool`,
+    - `interface`, `complex64/complex128`.
+- [x] Customizable configuration.
+
 ### Installation
 
 ```bash