add a few comments

src/run.rs

@@ -90,19 +90,24 @@ fn run_loop(procs: Vec<Proc>, holds: Option<i8>, poll: Poll, signals: Signals) -
 				let mut proc = procs.remove(i);
 
 				match proc.process.try_recv() {
+					// got something on stdout or stderr
 					Ok(ProcessEvent::Data(channel, data)) => {
 						process_event_data(channel, data, &proc.app.name);
 						procs.push(proc);
 					}
+					// error starting or closing child process
 					Ok(ProcessEvent::CommandError(e)) => {
 						error!("[{}]: command error: {:?}", &proc.app.name, e)
 					}
+					// error reading stdout or stderr
 					Ok(ProcessEvent::IoError(channel, e)) => {
 						error!("[{}]: io error on {:?}: {:?}", &proc.app.name, channel, e)
 					}
+					// error doing utf8 translation
 					Ok(ProcessEvent::Utf8Error(channel, e)) => {
 						error!("[{}]: utf8 error on {:?}: {:?}", &proc.app.name, channel, e)
 					}
+					// process exited
 					Ok(ProcessEvent::Exit(status)) => {
 						let hold = proc.app.hold.unwrap_or(false);
 						if proc.app.check_restart(status) {