Update README.md

Author: trantbatey

README.md

@@ -1,9 +1,11 @@
 # 101-exercises-java
 This file has a set of Java exercises to use for improve your skill level in Java and preparing you for coding interview questions. There are five levels of problems. As you improve you can move up levels.
 
+<pre>
  LEVELS:
           BASIC
-          EASY
-          INTERMEDIATE
-          DIFFICULT
-          ADVANCED
+          EASY 
+          INTERMEDIATE 
+          DIFFICULT 
+          ADVANCED 
+</pre>