added install depedency script

dependencies/osx/install_dependecies.command

@@ -0,0 +1,43 @@
+#!/bin/bash
+
+
+# create /usr/local/lib folder doesn't exist
+if [[ -d /usr/local/lib ]]; then
+	echo "found /usr/local/lib";
+else
+	echo "no /usr/local/lib folder";
+	echo "making /usr/local/lib";
+	sudo mkdir /usr/local/lib;
+fi	
+
+# copy libftd2xx.1.2.2.dylib if it doesn't exist
+if [[ -f /usr/local/lib/libftd2xx.1.2.2.dylib ]]; then
+	echo "found /usr/local/lib/libftd2xx.1.2.2.dylib";
+else
+	echo "copying /usr/local/lib/libftd2xx.1.2.2.dylib";
+	sudo cp libftd2xx.1.2.2.dylib /usr/local/lib/libftd2xx.1.2.2.dylib
+fi
+
+# make a symlink to libftd2xx.1.2.2.dylib if it doesn't exist
+if [[ -f /usr/local/lib/libftd2xx.dylib ]]; then
+	echo "found symlink /usr/local/lib/libftd2xx.dylib";
+else
+	echo "creating symlink /usr/local/lib/libftd2xx.dylib";
+	sudo ln -sf /usr/local/lib/libftd2xx.1.2.2.dylib /usr/local/lib/libftd2xx.dylib
+fi
+
+# set permissions for dylib and symlink
+sudo chmod a+r /usr/local/lib/libftd2xx.1.2.2.dylib
+sudo chmod a+r /usr/local/lib/libftd2xx.dylib
+
+# Disable AppleFTDI driver if it has been enabled
+foundAppleFTDI=`kextstat | grep FTDI | wc -l | xargs`
+if [ "$foundAppleFTDI" == "0" ]; then
+		echo "correct FTDI driver found"
+else
+	echo "removing AppleFTDI driver"
+	sudo kextunload -b com.apple.driver.AppleUSBFTDI
+fi
+
+echo "finished"
+