Fix build script

build

@@ -1,8 +1,10 @@
+#!/bin/bash
+
 pkgs=ubuntu-openjdk-7
-pkgs=$pkgs:minecraft-server
-pkgs=$pkgs:elasticsearch
-pkgs=$pkgs:titan-gremlin
-pkgs=$pkgs:cassandra
+pkgs="$pkgs minecraft-server"
+pkgs="$pkgs elasticsearch"
+pkgs="$pkgs titan-gremlin"
+pkgs="$pkgs cassandra"
 
 for p in $pkgs
 do