Update README.md to fix example code

Stroke rate line in example code was terminated incorrectly and ending units indicators were not commented out. Added a new line output before Stroke line to make it easier to see each set of output.

Author: dougtoppin

README.md

@@ -9,18 +9,16 @@ Simple API currently exposes: Stroke Rate, Total Speed, Average Speed, Distance,
 
 ```
 var waterrower = require("./Waterrower");
- 
-var readWaterrower = function() {
 
-  console.log("Stroke Rate ....." + waterrower.readStrokeCount())	[ - ];
-  console.log("Total Speed ....." + waterrower.readTotalSpeed());	[cm/s]
-  console.log("Average Speed ..." + waterrower.readAverageSpeed());	[cm/s]
-  console.log("Distance... ....." + waterrower.readDistance());		[ m ]
-  console.log("Heart Rate ......" + waterrower.readHeartRate());	[ bpm ]
+var readWaterrower = function() {
+  console.log();
+  console.log("Stroke Rate ....." + waterrower.readStrokeCount());  // [ - ]
+  console.log("Total Speed ....." + waterrower.readTotalSpeed());   // [cm/s]
+  console.log("Average Speed ..." + waterrower.readAverageSpeed()); // [cm/s]
+  console.log("Distance... ....." + waterrower.readDistance());     // [ m ]
+  console.log("Heart Rate ......" + waterrower.readHeartRate());    // [ bpm ]
 
 }
-
-setInterval(readWaterrower, 2000);
 ```
 
 Troubleshooting
@@ -52,4 +50,4 @@ Distance... ....................0
 Heart Rate .....................0
 in readWrite connecting
 in read open
-```
+```