add check for python3 lib

to close #865

Author: Dave Conway-Jones

hardware/PiLcd/package.json

@@ -1,6 +1,6 @@
 {
     "name"          : "node-red-node-pilcd",
-    "version"       : "0.2.1",
+    "version"       : "0.3.0",
     "description"   : "A Node-RED node for Raspberry Pi to write to HD44780 style LCD panels.",
     "dependencies"  : {
     },

hardware/PiLcd/pilcd.js

@@ -14,7 +14,7 @@ module.exports = function(RED) {
             RED.log.warn("rpi-lcd : "+RED._("pilcd.errors.ignorenode"));
             allOK = false;
         }
-        else if (!fs.existsSync("/usr/share/doc/python-rpi.gpio")) {
+        else if (!fs.existsSync("/usr/share/doc/python-rpi.gpio") && !fs.existsSync("/usr/share/doc/python3-rpi.gpio")) {
             RED.log.warn("rpi-lcd : "+RED._("pilcd.errors.libnotfound"));
             allOK = false;
         }

hardware/PiSrf/package.json

@@ -1,6 +1,6 @@
 {
     "name"          : "node-red-node-pisrf",
-    "version"       : "0.1.7",
+    "version"       : "0.2.0",
     "description"   : "A Node-RED node for a Raspberry Pi to use a SRF04 or SRF05 range finder",
     "dependencies"  : {
     },

hardware/PiSrf/pisrf.js

@@ -14,7 +14,7 @@ module.exports = function(RED) {
             RED.log.warn("rpi-srf : "+RED._("node-red:rpi-gpio.errors.ignorenode"));
             allOK = false;
         }
-        else if (!fs.existsSync("/usr/share/doc/python-rpi.gpio")) {
+        else if (!fs.existsSync("/usr/share/doc/python-rpi.gpio") && !fs.existsSync("/usr/share/doc/python3-rpi.gpio")) {
             RED.log.warn("rpi-srf : "+RED._("node-red:rpi-gpio.errors.libnotfound"));
             allOK = false;
         }

hardware/unicorn/package.json

@@ -1,6 +1,6 @@
 {
     "name"          : "node-red-node-pi-unicorn-hat",
-    "version"       : "0.0.23",
+    "version"       : "0.1.0",
     "description"   : "A Node-RED node to output to a Raspberry Pi Unicorn HAT from Pimorini.",
     "dependencies"  : {
         "pngjs": "2.2.*"

hardware/unicorn/unicorn.js

@@ -15,7 +15,7 @@ module.exports = function(RED) {
             RED.log.warn("rpi-unicorn : "+RED._("node-red:rpi-gpio.errors.ignorenode"));
             allOK = false;
         }
-        else if (!fs.existsSync("/usr/share/doc/python-rpi.gpio")) {
+        else if (!fs.existsSync("/usr/share/doc/python-rpi.gpio") && !fs.existsSync("/usr/share/doc/python3-rpi.gpio")) {
             RED.log.warn("rpi-unicorn : "+RED._("node-red:rpi-gpio.errors.libnotfound"));
             allOK = false;
         }