Update README.md

Author: sakabug

README.md

@@ -1,29 +1,18 @@
 ## Bugtton
-Fast button debounce library for ATmega328P, uses registers.
-
-### Why another button library?
-I've tried plenty of different button libraries with ATmega328P, but most of them lacked something, or were too bulky for my own use.
-
-### Fast
-It uses registers, and it's fast. 1000 cycles with various button amounts gave following:
-
-* Unpressed buttons 0.003 ms per cycle regardless button count.
-* Pressed buttons 0.010 - 0.085 ms per cycle with 1-18 buttons.
+Fast button debounce library for ATmega328P. Uses registers instead of digitalRead.
 
 ### Usage In nutshell
+Compact to use.
 ```
 #include <Bugtton.h>
-
-const uint8_t buttonCount = 5;
-const uint8_t buttonPins[buttonCount] = {2,3,4,5,6};
-Bugtton buttons(buttonCount, buttonPins, INPUT_PULLUP, 25);
--
+Bugtton buttons(5, {2,3,4,5,6}, INPUT_PULLUP, 25);
+--
 void loop() {
   buttons.update();
   
   if (buttons.fell(0))            //B0 down and debounced
   if (buttons.heldUntil(1,3000))  //B1 has been pressed 3 seconds
-  -
+  --
 ```
 
 ### Usable functions
@@ -40,3 +29,18 @@ Function|Notes
 **`bool held(button_i)`**<br>|*Is button_i pressed?*
 **`bool heldUntil(button_i, time)`**<br>|*Returns true ONCE when button_i have been pressed x time.*
 **`bool upUntil(button_i, time)`**<br>|*Returns true ONCE when button_i have been unpressed x time.*
+
+I use long press functionality alot in my codes, so I wanted to add suitable functions for it. Feel free to suggest new ideas.
+
+### Why this library was made
+Idea was to make fast button library when nothing is pressed so it would affect to the cycle time as little as possible.
+
+**Times per one cycle**
+Button amount|unpressed|pressed
+-|-|-
+1|0.003 ms|0.010 ms
+2|0.003 ms|0.014 ms
+3|0.003 ms|0.018 ms
+5|0.003 ms|0.027 ms
+10|0.003 ms|0.049 ms
+18|0.003 ms|0.085 ms