Ensure using the full path of provided JDK (#31)

Author: PenghaiZhang

gradle.properties

@@ -1,2 +1,2 @@
 junitVersion=4.12
-artifactVersion=1.0.2
+artifactVersion=1.0.3

launcher-scripts/Mac-launcher.sh

@@ -1,6 +1,6 @@
 #!/bin/zsh
 OLD_JAVA_HOME=$JAVA_HOME
-SCRIPT_DIRECTORY=${0:h}
+SCRIPT_DIRECTORY=${0:A:h}
 export JAVA_HOME=$SCRIPT_DIRECTORY/jdk8u212-b03-jre/Contents/Home
 "$JAVA_HOME/bin/java" -DLAUNCHER_JAVA_PATH="$JAVA_HOME/bin/java" -jar "$SCRIPT_DIRECTORY/libs/admin.jar"
 export JAVA_HOME=$OLD_JAVA_HOME