Added a new lemondcsv_gt.py readme file to parse files from GT

I don't have any of the original revolution files any more sadly
so instead of changing the original script, I added this additional
script to ensure I didn't break anything.

Author: tpodowd

README.md

@@ -1,15 +1,20 @@
-# lemondcsv v1.1.1
+# lemondcsv v1.2.0
 
-This script converts a native Lemond Revolution Power Pilot CVS
-workout file to a Garmin TCX file. The TCX file can be then imported
-into applications such as Strava or Garmin Connect.
+There are two scripts.
+
+- lemondcsv.py : Converts LeMond Revolution Power Pilot CVS file
+- lemondcsv_gt.py : Converts LeMond Revolution GT CVS files
+
+Both scripts convert different workout file formats into a Garmin TCX file.
+The TCX file can be then imported into applications such as Strava or Garmin Connect.
 
 ## Power Pilot Supported Firmare Versions
 
 Currently this script only supports firmware version 63 of the
-Lemond Power Pilot. If you have a lower version, I highly recomend
+Lemond Power Pilot or 0.31 for GT. If you have a lower version, I highly recomend
 installing the latest version which is currently 63 as a lot of
-bugs have been fixed. See [the Lemond Website](http://lemond.myshopify.com/blogs/news/7299932-power-pilot-firmware-updates) for details.
+bugs have been fixed. See [the Lemond Website](http://lemond.myshopify.com/blogs/news/7299932-power-pilot-firmware-updates) for details. I don't know a lot about the GT versions, I only got
+a sample file and modified the original script.
 
 To check your Power Pilot firmware version press and hold HR/KCAL for
 two seconds. The firmware version is shown in the lower right quadrant
@@ -59,10 +64,12 @@ then you can always use the '-f' argument with the '-' option.
 Once you have generated your TCX file, you can directly upload the file
 to Strava and analyze your workout there.
 
+For the GT script, the usage is similar.
+
 ## Python Version Support
 
 This script has been tested on Python 2.6, 2.7, 3.2 and 3.3. It will not
-work on Python 2.5 or earlier.
+work on Python 2.5 or earlier. I have tested this also on 3.10
 
 ## Contact/Questions/Bugs/Updates etc