commends for routingAPI

HelperFunctions.java

@@ -21,6 +21,7 @@ public class HelperFunctions {
     public double[][] routingAPI(double[] startCoords, double[] destinationCoords, Boolean tollsFlag, Boolean hwyFlag) {
         //ideally this would return a series of coordinates, but for the sake of the demo it's just
         //going to concatenate the start and end into a 2x2 array with just those two steps
+        //speed is also returned in MPH for the expected points as the third index in the array's second dimension
         double[][] routeArray = new double[2][3];
         if (tollsFlag && hwyFlag) { //provides a result that both avoid tolls and major highways
             routeArray[0] = startCoords;