replace requirejs-domready with a (self-made) HTML5 idiom, #51

This commit removes yet another dependency. The provided domready
function is compatible with IE9, Firefox and Safari/Chrome.

Inspired by:

* http://stackoverflow.com/a/15580098
* https://github.com/requirejs/domReady/blob/master/domReady.js

isso/js/app/lib/ready.js

@@ -0,0 +1,28 @@
+define(function() {
+
+    "use strict";
+
+    var loaded = false;
+    var once = function(callback) {
+        if (! loaded) {
+            loaded = true;
+            callback();
+        }
+    };
+
+    var domready = function(callback) {
+
+        // HTML5 standard to listen for dom readiness
+        document.addEventListener('DOMContentLoaded', function() {
+            once(callback);
+        });
+
+        // if dom is already ready, just run callback
+        if (document.readyState === "interactive" || document.readyState === "complete" ) {
+            once(callback);
+        }
+    };
+
+    return domready;
+
+});

isso/js/config.js

@@ -1,7 +1,6 @@
 var requirejs = {
     paths: {
         text : "components/requirejs-text/text",
-        ready: "components/requirejs-domready/domReady"
     },
 
     config: {

isso/js/count.js

@@ -1,4 +1,4 @@
-require(["ready", "app/count"], function(domready, count) {
+require(["app/lib/ready", "app/count"], function(domready, count) {
     domready(function() {
         count();
     })

isso/js/embed.js

@@ -3,7 +3,7 @@
  * Distributed under the MIT license
  */
 
-require(["ready", "app/config", "app/api", "app/isso", "app/count", "app/dom", "app/markup", "app/text/css"], function(domready, config, api, isso, count, $, Mark, css) {
+require(["app/lib/ready", "app/config", "app/api", "app/isso", "app/count", "app/dom", "app/markup", "app/text/css"], function(domready, config, api, isso, count, $, Mark, css) {
 
     "use strict";