Add doc for Natl Geo Topo format. From Alex Mottram.

diff --git a/gpsbabel/README b/gpsbabel/README
index f6bcbbfffd821dedb3ead81b563bed2d30046421..c37b5f9ebbd2551a35c0472fc0a48f058c4157f7 100644 (file)
--- a/gpsbabel/README
+++ b/gpsbabel/README
@@ -163,6 +163,13 @@ THE FORMATS
         against OziExplorer v 3.90.3a / Shareware.  Contributed by Alex
         Mottram.
 
+    TPG
+
+       National Geographic Topo! Waypoint Format.  This filter 
+       reads and writes .TPG files created by various editions of NG Topo! 
+       This filter will *not* work with the newer combined .TPO files.  
+       Contributed by Alex Mottram.
+
     HOLUX
 
         The Holuxgm-100 (e-fox) gps receiver uses standard compact