updated readme with example

Author: cansik

README.md

@@ -1,5 +1,5 @@
 # Sweep for Processing [![Build Status](https://travis-ci.org/cansik/sweep-processing.svg?branch=master)](https://travis-ci.org/cansik/sweep-processing) [![Build status](https://ci.appveyor.com/api/projects/status/2w9xm1dbafbi7xc0?svg=true)](https://ci.appveyor.com/project/cansik/sweep-processing) [![codebeat badge](https://codebeat.co/badges/3d8634b7-84eb-410c-b92b-24bf6875d8ef)](https://codebeat.co/projects/github-com-cansik-sweep-processing-master)
-Use the scanse sweep lidar with processing.
+Use the Scanse Sweep LIDAR with processing.
 
 ## Introduction
 
@@ -9,4 +9,39 @@ Currently it is still under development and is **ONLY** tested on MacOS.
 
 ![LIDAR Example](readme/lidar-example.png)
 
-*Example of the LIDAR with FX2D*
+*Example of the LIDAR with FX2D*
+
+## Example
+To simply get sample data from the LIDAR sensor, you have to create a new `SweepSensor` and call the `start` mehtod. The start method needs the path to the Sweep COM port.
+
+```java
+import ch.bildspur.sweep.*;
+
+SweepSensor sweep;
+
+void setup()
+{
+  size(600, 300, FX2D);
+
+  sweep = new SweepSensor(this);
+  sweep.start("/dev/tty.usbserial-DO004HM4");
+}
+```
+
+In draw you then just have to read the new samples from the device.
+
+```java
+void draw()
+{
+	// do your stuff
+	
+	// read samples
+	List<SensorSample> samples = sweep.getSamples()
+	
+	// do drawing
+}
+```
+
+It is recommended to save the reference to the list of samples in a own variable and only use `getSamples()` once in a draw loop. Otherwise it is not guaranteed, that the samples are from the same scan (Concurrency). 
+
+*Based on [BasicExample](examples/BasicExample/BasicExample.pde)*