added new signal info to readme

README.md

@@ -71,7 +71,9 @@ signal to listen for, e.g.
 
 In the example above, the refresh is `0`. This means that the module *will never
 refresh on its own*; it will wait for the RTMIN+1 signal. You may also configure
-your module to both refresh on a time interval AND listen for a signal.
+your module to both refresh on a time interval AND listen for a signal. Also
+note: multiple modules may listen for the same signal. They will all be
+refreshed when the signal is recieved.
 
 Unfortunately, to send the signal, you cant just `pkill easyconf-lemonbar`. You
 have to read the PID from eclb's pidfile. I would recommend creating an alias in

easyconf_lemonbar/SignalRouter.py

@@ -6,8 +6,9 @@ class SignalRouter:
         self.signal_thread_dictionary = {}
 
     def __route_signal(self, signal, frame):
-        pthread_kill(self.signal_thread_dictionary[signal], signal)
+        for thread_ident in self.signal_thread_dictionary[signal]:
+            pthread_kill(thread_ident, signal)
 
     def register_signal_thread(self, signal, thread_ident):
-        self.signal_thread_dictionary[signal] = thread_ident
+        self.signal_thread_dictionary.setdefault(signal, []).append(thread_ident)
         sigsignal(signal, self.__route_signal)