Update README.md

Author: devinaconley

README.md

@@ -33,12 +33,12 @@ Install manually with the [ZIP file of Plotter](https://github.com/devinaconley/
 ---
 
 #### Setup Listener
-Download one of the following stand-alone listener options. Keep the folder intact so the application can access the library and source folders. 
+Download one of the following stand-alone listener options. Keep the folder intact so the application can access the library and source folders. **(Java Runtime Environment 8 required)**
 - [Windows 32-bit](https://www.dropbox.com/s/vbgd4osedrfgep3/arduino-plotter-listener-windows32.zip?dl=1)
 - [Windows 64-bit](https://www.dropbox.com/s/0x4xqv375h4j5hh/arduino-plotter-listener-windows64.zip?dl=1)
 - [Linux 32-bit](https://www.dropbox.com/s/u0g1ey96aw14k9z/arduino-plotter-listener-linux32.zip?dl=1)
 - [Linux 64-bit](https://www.dropbox.com/s/lsrpo5edb25sv3a/arduino-plotter-listener-linux64.zip?dl=1)
-- [Mac OS X](https://www.dropbox.com/s/emasvotan4yxbmo/ArduinoPlotter_listener_macOSX.zip?dl=1)
+- [Mac OS X](https://www.dropbox.com/s/k6ej5jftofotlhk/arduino-plotter-listener-macosx.zip?dl=1)
 
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