better setup.sh, and /bin/isbpl creation

bootstrap/ISBPL.java

@@ -1334,6 +1334,8 @@ public class ISBPL {
     }
     
     public void interpret(File file, String code, Stack<ISBPLObject> stack) {
+        if(code.startsWith("#!"))
+            code = code.substring(code.indexOf("\n") + 1);
         fileStack.get().push(file);
         code = cleanCode(code);
         String[] words = splitWords(code);

setup.sh

@@ -1,4 +1,16 @@
 #!/bin/bash
-echo 'ISBPL_PATH=/usr/lib/isbpl' >> /etc/environment
+if [ "$ISBPL_PATH" = "" ] ; then
+    echo 'ISBPL_PATH=/usr/lib/isbpl' >> /etc/environment
+fi
 mkdir /usr/lib/isbpl
 cp ./*.isbpl /usr/lib/isbpl
+cd bootstrap
+javac ISBPL.java
+zip -r ISBPL.jar *.class META-INF 
+rm *.class
+cd ..
+echo "#!/usr/bin/java -jar" > ISBPL.jar
+cat bootstrap/ISBPL.jar >> ISBPL.jar
+chmod a+rx ISBPL.jar
+cp ISBPL.jar /bin/isbpl
+chmod a+rx /bin/isbpl