updated docs

README.md

@@ -2,12 +2,21 @@
 
 This is an application of the TSL 2591 sensor to measuring sky brightness for astronomical applications.  It returns the sky brightness in units of magnitude per square arc-second.  Also accessible to the user are the raw counts of the visible and IR channels.  
 
-Some features:
+## Some features
  - Adaptive exposure and gain control to reduce noise in low light environment.  
  - Calibration offset can be adjusted by user with ```setCalibrationOffset```
  - Noise estimates given assuming signal counts follow a Poisson process
 
-This, along with other Arduino projects, can be placed on an ESP8266 module.  I have written a library for using these modules to push data to an influx time-series database and display these results using Grafana.  Below is a screenshot the Grafana frontend with of one night.  Shown are two sensors, one in a weatherstation taking measurements from the sky, and another in a cabinet to illustrate the noise floor.  
+## Examples
+ - Emulator for [SQM-LE](example/SQM-LE.cpp) network connected device compatible with ESP8266 devices
+ - Emulator for [SQM-LU](example/SQM-LU.cpp) usb connected device compatible with most Arduino devices
+ - Simple [example code](example/SQM_TSL2591_example.cpp) for Arduino devices
+
+
+
+## Data visualization
+
+This, along with other Arduino projects, can be placed on an ESP8266 module.  I have written a library for using these modules to push data to an influx time-series database and display these results using Grafana.  Below is a screenshot the Grafana frontend with of one night.  Shown are two sensors, one in a Weather Station taking measurements from the sky, and another in a cabinet to illustrate the noise floor.  
 
 
 ![SQM Chart](/screenshots/SQMdual.png?raw=true "SQM Chart")