update SensorTag node to add Pi instructions

hardware/sensorTag/79-sensorTag.html

@@ -62,6 +62,7 @@
     <p><strong>NOTE:</strong> Only 1 sensorTag can be read from at a time,
       if you add more than one to the canvas then only the first to connect
       will work.</p>
+    <p>Linux users should <a href="https://github.com/sandeepmistry/bleno#running-on-linux" target="_new">READ THIS</a>.</p>
 </script>
 
 <script type="text/javascript">

hardware/sensorTag/README.md

@@ -3,6 +3,20 @@ node-red-node-sensortag
 
 This node adds support to Node-RED to read from the Texas Instruments SensorTag.
 
+Pre-requisites
+--------------
+
+You will need a suitable Bluetooth Low Energy (BLE) stack and drivers for your hardware
+- for example Bluez 5.2.x or better.
+
+#### Raspberry Pi
+
+Install Bluetooth drivers and bluez stack, and set executeable by non-root user
+
+    sudo apt-get install libbluetooth-dev libudev-dev pi-bluetooth
+    sudo setcap cap_net_raw+eip $(eval readlink -f `which node`)
+
+
 Install
 -------
 
@@ -10,10 +24,6 @@ Run the following command in your Node-RED user directory - typically `~/.node-r
 
     npm i node-red-node-sensortag
     
-You will also need a suitable BLE dongle and an enabled Bluetooth stack - for example Bluez 5.2.x or better.
-On a Raspberry Pi this can be installed (as of Feb 2016) by
-
-    sudo apt-get install pi-bluetooth
 
 Usage
 -----

hardware/sensorTag/package.json

@@ -1,7 +1,7 @@
 {
     "name": "node-red-node-sensortag",
     "description": "A Node-RED node to read data from a TI SensorTag",
-    "version": "0.0.10",
+    "version": "0.0.11",
     "keywords": [
         "node-red",
         "sensortag",