added a note about this code working only on Linux right now

pkrumins · Apr 11, 2013 · e51a850 · e51a850
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diff --git a/readme.markdown b/readme.markdown
@@ -20,6 +20,8 @@ Methods
 
 Sends signal `signal` to all children processes of the process with pid `pid`, including `pid`. Signal defaults to `SIGTERM`.
 
+Currently works on Linux only as it uses `ps -o pid --no-headers --ppid PID` to find the parent pids of `PID`.
+
 Install
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