Added proguard 4.7 files

please note that proguard is not yet implmented
refs #17

public/proguard/bin/proguard.sh

@@ -0,0 +1,12 @@
+#!/bin/sh
+#
+# Start-up script for ProGuard -- free class file shrinker, optimizer,
+# obfuscator, and preverifier for Java bytecode.
+#
+# Note: when passing file names containing spaces to this script,
+#       you'll have to add escaped quotes around them, e.g.
+#       "\"/My Directory/My File.txt\""
+
+PROGUARD_HOME=`dirname "$0"`/..
+
+java -jar $PROGUARD_HOME/lib/proguard.jar "$@"