cleanup a few comments

config.h.example

@@ -1,5 +1,18 @@
 #define JSONDIR "store"
 
+/*
+ * 1	=> 5,009.4km x 4,992.6km
+ * 2	=> 1,252.3km x 624.1km
+ * 3	=> 156.5km x 156km
+ * 4	=> 39.1km x 19.5km
+ * 5	=> 4.9km x 4.9km
+ * 6	=> 1.2km x 609.4m
+ * 7	=> 152.9m x 152.4m
+ * 8	=> 38.2m x 19m
+ * 9	=> 4.8m x 4.8m
+ * 10	=> 1.2m x 59.5cm
+ */
+
 #define GEOHASH_PREC	(7)
 
 /*