Addressed issue with Arduino 1.6.6

Author: MHeironimus

Joystick/src/Joystick.h

@@ -27,9 +27,11 @@
 #error The Joystick library requires Arduino IDE 1.6.6 or greater. Please update your IDE.
 #endif
 
+#if ARDUINO > 10606
 #if !defined(USBCON)
 #error The Joystick library can only be used with a USB MCU (e.g. Arduino Leonardo, Arduino Micro, etc.).
 #endif
+#endif
 
 #if !defined(_USING_DYNAMIC_HID)
 

README.md

@@ -208,6 +208,7 @@ I have tested this library using the following Arduino IDE Versions:
 - 1.6.10
 - 1.6.11
 - 1.6.12
+- 1.6.13
 
 I have tested this library with the following boards:
 
@@ -223,4 +224,4 @@ works with the Arduino Due. I have also been told Version 1.x of the the Arduino
 - [Arduino UNO](https://www.arduino.cc/en/Main/ArduinoBoardUno) - NOT Supported - However, it might work with the [NicoHood/HoodLoader2](https://github.com/NicoHood/HoodLoader2) library, but I have not had a chance to try this out yet.
 - [Arduino MEGA](https://www.arduino.cc/en/Main/ArduinoBoardMega2560) - NOT Supported - However, it might work with the [NicoHood/HoodLoader2](https://github.com/NicoHood/HoodLoader2) library, but I have not had a chance to try this out yet.
 
-(as of 2016-10-17)
+(as of 2016-11-25)