Add notes that mcp3008 is and A/D Converter

to fix #248
Thanks @ukmoose

Author: Dave Conway-Jones

hardware/mcp3008/README.md

@@ -5,6 +5,8 @@ A <a href="http://nodered.org" target="_new">Node-RED</a> node to read from
 the MCP3008 Analogue to Digital Converter,
 such as the <a href="http://rasp.io/analogzero" target="_new">Rasp.io analogzero</a>, though it will work with breadboard versions also.
 
+It will appear in the menu as ` A/D Converter `.
+
 **Warning**: Input voltages must not exceed 3.3V
 
 ### Pre-requisites
@@ -24,6 +26,8 @@ Run the following command in your Node-RED user directory - typically `~/.node-r
 
         npm install node-red-node-pi-mcp3008
 
+**Note**: It will appear in the menu as ` A/D Converter `.
+
 ### Usage
 
 Reads from an MCP3008 Analogue to Digital (ADC) chip on the Pi SPI CE0 connection.

hardware/mcp3008/package.json

@@ -1,6 +1,6 @@
 {
     "name"          : "node-red-node-pi-mcp3008",
-    "version"       : "0.0.3",
+    "version"       : "0.0.4",
     "description"   : "A Node-RED node to read from the MCP3008 Analogue to Digital Converter",
     "dependencies"  : {
         "mcp-spi-adc": "^0.0.1"
@@ -10,7 +10,7 @@
         "url":"https://github.com/node-red/node-red-nodes/tree/master/hardware"
     },
     "license": "Apache-2.0",
-    "keywords": [ "node-red", "pi", "adc", "mcp3008" ],
+    "keywords": [ "node-red", "pi", "adc", "mcp3008", "a/d converter" ],
     "node-red"      : {
         "nodes"     : {
             "pimcp3008": "pimcp3008.js"