Add Weather_chk

Auxiliary_utils/Weather_chk/Readme.md

@@ -0,0 +1,18 @@
+Check meteostation parameters
+===========================
+
+    Usage: chkweather [args]
+    
+            Where args are:
+    
+      -d, --devname=arg   serial device name
+      -h, --help          show this help
+      -s, --speed=arg     baudrate (default: 9600)
+
+
+Output: 
+Rain=0/1
+Clouds=0/1
+
+Return value:
+0 if no rain, 1 if there's rainy