Add config dir creation.

src/main/java/net/brokenmoon/afloydironchest/IronChestMain.java

@@ -102,6 +102,9 @@ public class IronChestMain implements ModInitializer {
             InputStream in;
             OutputStream out;
             try {
+                File configDir = new File("config");
+                if (!configDir.exists())
+                    configDir.mkdir();
                 in = IronChestMain.class.getClassLoader().getResourceAsStream("assets/ironchest/config.toml");
                 out = new FileOutputStream(config);
                 byte[] buffer = new byte[1024];