Street toString()

- Print street details and fields.
    - Print scaled street density.

src/Street.java

@@ -161,4 +161,34 @@ public class Street {
     	}
     	return false;
 	}
+
+    public String toString(){
+        StringBuilder printedStreet = new StringBuilder();
+        //Imagine steert is 32 units in lengths (scale down)
+        for (int i = 0; i < 32; i++){
+            printedStreet.append("----");
+        }
+        printedStreet.append("\n");
+        //This is vary bad. Should copy vehicles list and reduce when a vehicle is counted;
+        for (int i = 0; i < 32; i++){
+            int cars = 0;
+            for (Vehicle vehicle : vehicles){
+                double realLocation = vehicle.getCurrentLocation();
+                int scaledLocation = (int)((realLocation*32) / this.length);
+                if (scaledLocation == i) cars++;
+            }
+            //if 'cars' is 4 digits or more it will distort the output
+            printedStreet.append(String.format("%03d ", cars));
+        }
+        printedStreet.append("\n");
+        for (int i = 0; i < 32; i++){
+            printedStreet.append("----");
+        }
+        return String.format("Street name: %s, Length: %f, Lanes: %d, Vehicles: %d\nDensity:\n%s\n",
+                name.name(),
+                length,
+                numberOfLanes,
+                vehicles.size(),
+                printedStreet.toString());
+    }
 }