bump PiSRF node to fix timeout

Thanks @bartbutenaers to Close #309

hardware/PiSrf/nrsrf.py

@@ -34,9 +34,9 @@ def Measure():
     while GPIO.input(ECHO)==1:
         stop = time.time()
         Dif = time.time() - realstart
-        if Dif > 5:
+        if Dif > 0.4:
             print("Ultrasonic Sensor Timed out, Restarting.")
-            time.sleep(0.4)
+            time.sleep(0.2)
             Main()
 
     elapsed = stop-start

hardware/PiSrf/package.json

@@ -1,6 +1,6 @@
 {
     "name"          : "node-red-node-pisrf",
-    "version"       : "0.0.3",
+    "version"       : "0.0.4",
     "description"   : "A Node-RED node for a Raspberry Pi to use a SRF04 or SRF05 range finder",
     "dependencies"  : {
     },