Fixed format, added println for cooking degrees and refactored burnt exception

src/main/java/org/drtshock/BurntException.java

@@ -0,0 +1,12 @@
+package org.drtshock;
+
+/**
+ * An exception to describe that something went wrong with our oven!
+ */
+public class BurntException extends Exception {
+
+    public BurntException(int degrees) {
+        super("Potato is badly burnt by trying to boil it at " + degrees + " degrees!!");
+    }
+
+}