Update README.md

Author: jarzebski

README.md

@@ -5,4 +5,17 @@ This library is prepared for IMU calculations
 
 See examples: http://www.jarzebski.pl/arduino/rozwiazania-i-algorytmy/odczyty-pitch-roll-oraz-filtr-kalmana.html
 
+I need your help
+----------------
 
+July 31, 2017
+
+In the near future I plan to refactoring the libraries. The main goal is to improve code quality, new features and add support for different versions of Arduino boards like Uno, Mega and Zero.
+
+For this purpose I need to buy modules, Arduino Boards and lot of beer. 
+
+If you want to support the further and long-term development of libraries, please help.
+
+You can do this by transferring any amount to my PayPal account: paypal@jarzebski.pl
+
+Thanks!