fix the package path to be less platform dependent

bin/kaleidoscope-builder

@@ -126,8 +126,8 @@ compile () {
     fi
 
     ARDUINO_PACKAGES=""
-    if [ -d "${HOME}/.arduino15/packages" ]; then
+    if [ -d ${ARDUINO_PACKAGE_PATH} ]; then
-	 ARDUINO_PACKAGES="-hardware \"${HOME}/.arduino15/packages\""
+	 ARDUINO_PACKAGES="-hardware \"${ARDUINO_PACKAGE_PATH}\""
     fi
 
     ${ARDUINO_BUILDER} \

etc/kaleidoscope-builder.conf

@@ -54,6 +54,7 @@ if [ "${uname_S}" = "Darwin" ]; then
 
 
     ARDUINO_PATH="${ARDUINO_PATH:-/Applications/Arduino.app/Contents/Java/}"
+    ARDUINO_PACKAGE_PATH="${ARDUINO_PACKAGE_PATH:-${HOME}/Library/Arduino15/packages}"
     ARDUINO_LOCAL_LIB_PATH="${ARDUINO_LOCAL_LIB_PATH:-${HOME}/Documents/Arduino}"
 
     MD5="md5"
@@ -79,6 +80,8 @@ fi
 ARDUINO_PATH="${ARDUINO_PATH:-/usr/local/arduino}"
 ARDUINO_LOCAL_LIB_PATH="${ARDUINO_LOCAL_LIB_PATH:-${HOME}/Arduino}"
 ARDUINO_TOOLS_PATH="${ARDUINO_TOOLS_PATH:-${ARDUINO_PATH}/hardware/tools}"
+ARDUINO_PACKAGE_PATH="${ARDUINO_PACKAGE_PATH:-${HOME}/.arduino15/packages}"
+
 ARDUINO_BUILDER="${ARDUINO_BUILDER:-${ARDUINO_PATH}/arduino-builder}"
 ARDUINO_IDE_VERSION="100607"