Update README.md

Tr4sHCr4fT · web-flow · commit bc5620da670c · 2016-09-09T17:52:16.000+02:00
diff --git a/README.md b/README.md
@@ -1 +1,3 @@
-    tracker.py -a ptc -u <username> -p <password> -l 'Location'
+### selective, very fast tracker for PokeAlarm
+    
+    tracker.py -a ptc -u1 <username1> -p1 <password1> -u2 <username2> -p2 <password2>  -l 'Location'
