Add chinese to application code

Author: freenerd

instructions.js

@@ -2,6 +2,7 @@ var instructionsDe = require('./instructions/de.json');
 var instructionsEn = require('./instructions/en.json');
 var instructionsFr = require('./instructions/fr.json');
 var instructionsNl = require('./instructions/nl.json');
+var instructionsZhHans = require('./instructions/zh-Hans.json');
 
 module.exports = {
     get: function(language) {
@@ -14,6 +15,9 @@ module.exports = {
             return instructionsFr;
         case 'nl':
             return instructionsNl;
+        case 'zh':
+        case 'zh-Hans':
+            return instructionsZhHans;
         default:
             throw 'invalid language ' + language;
         }

test/instructions_test.js

@@ -17,6 +17,14 @@ const languages = [
     {
         tag: 'nl',
         leftTurn: 'Ga linksaf'
+    },
+    {
+        tag: 'zh',
+        leftTurn: '左转'
+    },
+    {
+        tag: 'zh-Hans',
+        leftTurn: '左转'
     }
 ];