initialize JS for word_cloud

common/lib/xmodule/xmodule/js/src/word_cloud/word_cloud_main.js

-window.Poll = function (el) {
-    RequireJS.require(['PollMain'], function (PollMain) {
-        new PollMain(el);
-    });
-};
+(function (requirejs, require, define) {
+define('WordCloudMain', ['logme'], function (logme) {
+
+WordCloudMain.prototype = {
+
+'submitAnswer': function (answer, answerObj) {
+    var _this;
+
+    _this = this;
+
+    console.log('submit answer');
+
+    answerObj.buttonEl.addClass('answered');
+
+    // Send the data to the server as an AJAX request. Attach a callback that will
+    // be fired on server's response.
+    $.postWithPrefix(
+        _this.ajax_url + '/' + answer,  {},
+        function (response) {
+            console.log('success! response = ');
+            console.log(response);
+
+
+            _this.showWordCloud(response.poll_answers, response.total);
+
+        }
+    );
+
+}, // End-of: 'submitAnswer': function (answer, answerEl) {
+
+'showWordCloud': function(){
+    console.log('TADAM!!!')
+},
+
+}; // End-of: WordCloudMain.prototype = {
+
+return WordCloudMain;
+
+function WordCloudMain(el) {
+    var _this;
+
+    this.questionEl = $(el).find('.poll_question');
+    if (this.questionEl.length !== 1) {
+        // We require one question DOM element.
+        logme('ERROR: WordCloudMain constructor requires one question DOM element.');
+
+        return;
+    }
+
+    // Access this object inside inner functions.
+    _this = this;
+
+    this.submitAnswer(this.questionEl)
+} // End-of: function WordCloudMain(el) {
+
+}); // End-of: define('WordCloudMain', ['logme'], function (logme) {
+
+// End-of: (function (requirejs, require, define) {
+}(RequireJS.requirejs, RequireJS.require, RequireJS.define));

lms/templates/word_cloud.html

 <section
-    id="poll_${element_id}"
+    id="word_cloud_${element_id}"
     class="${element_class}"
     data-ajax-url="${ajax_url}"
 >