add a bit of documentation
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								readme.md
									
									
									
									
									
								
							@ -372,10 +372,11 @@ But lets start with how to use it, first!
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First, you will need `TAP_DANCE_ENABLE=yes` in your `Makefile`, because the feature is disabled by default. This adds a little less than 1k to the firmware size. Next, you will want to define some tap-dance keys, which is easiest to do with the `TD()` macro, that - similar to `F()`, takes a number, which will later be used as an index into the `tap_dance_actions` array.
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This array specifies what actions shall be taken when a tap-dance key is in action. Currently, there are two possible options:
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This array specifies what actions shall be taken when a tap-dance key is in action. Currently, there are three possible options:
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* `ACTION_TAP_DANCE_DOUBLE(kc1, kc2)`: Sends the `kc1` keycode when tapped once, `kc2` otherwise.
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* `ACTION_TAP_DANCE_FN(fn)`: Calls the specified function - defined in the user keymap - with the current state of the tap-dance action.
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* `ACTION_TAP_DANCE_FN(fn)`: Calls the specified function - defined in the user keymap - with the final tap count of the tap dance action.
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* `ACTION_TAP_DANCE_FN_ADVANCED(on_each_tap_fn, on_dance_finished_fn, on_reset_fn)`: Calls the first specified function - defined in the user keymap - on every tap, the second function on when the dance action finishes (like the previous option), and the last function when the tap dance action resets.
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The first option is enough for a lot of cases, that just want dual roles. For example, `ACTION_TAP_DANCE(KC_SPC, KC_ENT)` will result in `Space` being sent on single-tap, `Enter` otherwise.
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@ -399,7 +400,8 @@ In the end, let's see a full example!
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enum {
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 CT_SE = 0,
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 CT_CLN,
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 CT_EGG
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 CT_EGG,
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 CT_FLSH,
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};
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/* Have the above three on the keymap, TD(CT_SE), etc... */
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@ -424,10 +426,50 @@ void dance_egg (qk_tap_dance_state_t *state) {
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  }
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}
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// on each tap, light up one led, from right to left
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// on the forth tap, turn them off from right to left
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void dance_flsh_each(qk_tap_dance_state_t *state) {
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  switch (state->count) {
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  case 1:
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    ergodox_right_led_3_on();
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    break;
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  case 2:
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    ergodox_right_led_2_on();
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    break;
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  case 3:
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    ergodox_right_led_1_on();
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    break;
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  case 4:
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    ergodox_right_led_3_off();
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    _delay_ms(50);
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    ergodox_right_led_2_off();
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    _delay_ms(50);
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    ergodox_right_led_1_off();
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  }
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}
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// on the fourth tap, set the keyboard on flash state
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void dance_flsh_finished(qk_tap_dance_state_t *state) {
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  if (state->count >= 4) {
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    reset_keyboard();
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    reset_tap_dance(state);
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  }
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}
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// if the flash state didnt happen, then turn off leds, left to right
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void dance_flsh_reset(qk_tap_dance_state_t *state) {
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  ergodox_right_led_1_off();
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  _delay_ms(50);
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  ergodox_right_led_2_off();
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  _delay_ms(50);
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  ergodox_right_led_3_off();
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}
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const qk_tap_dance_action_t tap_dance_actions[] = {
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  [CT_SE]  = ACTION_TAP_DANCE_DOUBLE (KC_SPC, KC_ENT)
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 ,[CT_CLN] = ACTION_TAP_DANCE_FN (dance_cln)
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 ,[CT_EGG] = ACTION_TAP_DANCE_FN (dance_egg)
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 ,[CT_FLSH] = ACTION_TAP_DANCE_FN_ADVANCED (dance_flsh_each, dance_flsh_finished, dance_flsh_reset)
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};
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```
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