add code to not run classList unless it's supported by browser (#3)

* add code to not run classList unless it's supported by browser

* add graceful failing for unsupported browsers

* change class display names

Author: PeshekDotDev

app.js

@@ -16,6 +16,8 @@
 
   INSTALL_SCOPE = {
     setOptions(nextOptions) {
+      if (!document.body.classList) return
+
       const elements = Array.prototype.slice.call(document.querySelectorAll("." + options.theme))
 
       elements.forEach(element => {

build/app.js

@@ -17,6 +17,8 @@
 
   INSTALL_SCOPE = {
     setOptions: function setOptions(nextOptions) {
+      if (!document.body.classList) return;
+
       var elements = Array.prototype.slice.call(document.querySelectorAll("." + options.theme));
 
       elements.forEach(function (element) {

install.json

@@ -48,9 +48,9 @@
           "select-theme-chosen"
         ],
         "enumNames": {
-          "select-theme-default": "Default",
+          "select-theme-default": "Light",
           "select-theme-dark": "Dark",
-          "select-theme-chosen": "Chosen"
+          "select-theme-chosen": "Compact"
         }
       }
     }