Update README with custom Wx info

diff --git a/README.md b/README.md
index 8bbe60e022b00e9286ad87910cc2a3f824c442cd..681feac7a7e0972b7c9fe82024c593bbec1332c7 100644 (file)
--- a/README.md
+++ b/README.md
@@ -1,9 +1,9 @@
 InfoEx AutoWx (IEAW)
 =============
 
-This program fetches data from an NRCS SNOTEL or MesoWest station and
-pushes it into the InfoEx system using the new automated weather system
-implementation.
+This program fetches data from an NRCS SNOTEL or MesoWest station, or
+your own custom data source, and pushes it into the InfoEx system using
+the new automated weather system implementation.
 
 Licensed under the ISC license (see file: LICENSE).
 
@@ -199,6 +199,13 @@ This program supports custom weather station data by allowing the user
 to specify the path to an external Python program. The external Python
 program should emit its data in the form expected by infoex-autowx.
 
+This is a powerful feature which enables the user to upload data from
+any source imaginable into InfoEx. Common examples are a local database
+or a remote web page which requires some custom parsing.
+
+Please see the program located at examples/custom-wx.example.py for a
+complete description of what's required.
+
 A note on supported measurements
 --------------------------------
 
@@ -208,7 +215,6 @@ weather station may not record them. In this case, the data will simply
 be ignored (i.e. it will NOT log "0" when there's no measurement
 available).
 
-
 InfoEx provides a mechanism for inspecting your automated weather
 station data, so use that after setting this program up and compare it
 with the data you see in your web browser.
@@ -234,6 +240,20 @@ wind\_speed
 wind\_direction  
 wind\_gust  
 
+**Custom Wx program**  
+*infoex-autowx expects a custom Wx data provider to provide at least one
+of the following:*  
+precipitationGauge  
+tempPres  
+tempMaxHour  
+tempMinHour  
+hS  
+baro  
+rH  
+windSpeedNum  
+windDirectionNum  
+windGustSpeedNum  
+
 Future plans
 ------------