Update postinstall.js

Author: thiagogq

js/postinstall.js

@@ -17,7 +17,11 @@ const dependencies = [
   { src: 'node_modules/ace-builds/src-min/mode-javascript.js', dest: 'dependencies/ace/' },
   { src: 'node_modules/ace-builds/src-min/mode-html.js', dest: 'dependencies/ace/' },
   { src: 'node_modules/ace-builds/src-min/mode-css.js', dest: 'dependencies/ace/' },
+  { src: 'node_modules/ace-builds/src-min/mode-json.js', dest: 'dependencies/ace/' },
   { src: 'node_modules/ace-builds/src-min/mode-markdown.js', dest: 'dependencies/ace/' },
+  { src: 'node_modules/ace-builds/src-min/worker-xml.js', dest: 'dependencies/ace/' },
+  { src: 'node_modules/ace-builds/src-min/worker-javascript.js', dest: 'dependencies/ace/' },
+  { src: 'node_modules/ace-builds/src-min/worker-css.js', dest: 'dependencies/ace/' },
   { src: 'node_modules/ace-builds/src-min/ace.js', dest: 'dependencies/ace/' },
   { src: 'node_modules/ace-builds/src-min/ext-*', dest: 'dependencies/ace/' },
   { src: 'node_modules/ace-builds/src-min/theme-github_light_default.js', dest: 'dependencies/ace/' },