updated readme

readme.md

@@ -1,7 +1,7 @@
 node-nmea
 =========
 
-An extensible parser and encoder for NMEA-0183 sentences. 
+An extensible parser and encoder for NMEA-0183 sentences for use with node.js.
 
 If you aren't familiar with NMEA-0183, look it up on Wikipedia.
 
@@ -23,6 +23,8 @@ Features
     (it doesn't read the serial or USB input. you have to get the sentences from somewhere yourself)
 
     has built-in support for several of the most common NMEA sentences
+        GPGGA
+        GPRMC
 
     lets you add sentence parsers for those not built-in (there are literally dozens of standard and proprietary sentence types)
 * takes geographic location input and encodes it into valid NMEA-0183 sentences