ensure --unsafe-perm in azure and aws install docs

Author: Dave Conway-Jones

docs/faq/interacting-with-arduino.md

@@ -44,7 +44,7 @@ You then need to install the Node-RED Arduino nodes into the palette.
 <div class="doc-callout">Please check that `npm -v` is at least version 2.x
 - if not - update it using
 
-        sudo npm i -g npm@2.x
+        sudo npm i -g npm@latest
         hash -r
 </div>
 

docs/getting-started/aws.md

@@ -137,7 +137,7 @@ Once logged in you need to install node.js and Node-RED
 
        curl -sL https://deb.nodesource.com/setup_10.x | sudo -E bash -
        sudo apt-get install -y nodejs build-essential
-       sudo npm install -g node-red
+       sudo npm install -g --unsafe-perm node-red
 
 
 At this point you can test your instance by running `node-red`. *Note*: you may
@@ -149,7 +149,7 @@ Once started, you can access the editor at `http://<your-instance-ip>:1880/`.
 To get Node-RED to start automatically whenever your instance is restarted, you
 can use pm2:
 
-       sudo npm install -g pm2
+       sudo npm install -g --unsafe-perm pm2
        pm2 start `which node-red` -- -v
        pm2 save
        pm2 startup

docs/getting-started/azure.md

@@ -49,7 +49,7 @@ Once logged in you need to install node.js and Node-RED
 
        curl -sL https://deb.nodesource.com/setup_10.x | sudo -E bash -
        sudo apt-get install -y nodejs build-essential
-       sudo npm install -g node-red
+       sudo npm install -g --unsafe-perm node-red
 
 
 At this point you can test your instance by running `node-red`. *Note*: you may
@@ -61,7 +61,7 @@ Once started, you can access the editor at `http://<your-instance-ip>:1880/`.
 To get Node-RED to start automatically whenever your instance is restarted, you
 can use pm2:
 
-       sudo npm install -g pm2
+       sudo npm install -g --unsafe-perm pm2
        pm2 start `which node-red` -- -v
        pm2 save
        pm2 startup

docs/user-guide/node-red-admin.md

@@ -15,7 +15,7 @@ instance.
 Install this globally to make the `node-red-admin` command available on
 your path:
 
-    npm install -g node-red-admin
+    npm install -g --unsafe-perm node-red-admin
 
 <div class="doc-callout">
 <em>Note</em> : <code>sudo</code> is required if running as a non-root user on Linux/OS X. If