Added draft and wrote TODO's to RumbleBot.java

src/RumbleBot.java

 public class RumbleBot extends Bot{
+    private String moves = "";
     public static void main(String[] args) {
         Bot rumbleBot = new RumbleBot(args);
         rumbleBot.run();
     }
 
     protected char nextMove(View view){
-        return 0;
+        return walk(); //@TODO Add nextMove() logic
+    }
+
+    private char walk(){
+        if(moves.isEmpty()){
+            moves += ' '; //@TODO Add walk() logic
+        }
+        char nextMove = moves.charAt(0);
+        moves = moves.substring(1);
+        return nextMove;
     }
 }