Update README.md

Author: CoohLand

README.md

@@ -1,6 +1,6 @@
 # Trout
 
-a converter for data generated by Twiddler 3's [Untethered-Recording Mode](http://forum.tekgear.com/t/untethered-chording/26/25)
+a converter for data generated by Twiddler 3's [Untethered-Recording Mode](http://forum.tekgear.com/t/untethered-chording/26/25)  
 
 ```Shell
 Usage: trout [<inputfile>]
@@ -10,3 +10,5 @@ e.g.
 $ ./trout walking_journal/20170704.key
 
 ```
+
+*commandline utility for macOS. Linux and Windows version in the works.*