Add description of Locking CapsLock in README

README.md

@@ -19,6 +19,7 @@ Features
 * Keyboard Tricks     - Oneshot modifier and modifier with tapping feature
 * Debug Console       - Messages for debug and interaction with firmware
 * Virtual DIP Switch  - Configurations stored EEPROM(Boot Magic)
+* Locking CapsLock    - Mechanical switch support for CapsLock
 
 
 Projects
@@ -296,6 +297,13 @@ These settings are stored in EEPROM.
 **TBD**
 
 
+Mechanical Locking support for CapsLock
+---------------------------------------
+To enable this feature define these two macros in `config.h` and use `KC_LCAP` for locking CapsLock in keymap instead of normal `KC_CAPS`. Resync option tries to keep lock switch state consistent with keyboard LED state.
+ 
+    #define CAPSLOCK_LOCKING_ENABLE
+    #define CAPSLOCK_LOCKING_RESYNC_ENABLE
+
 
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