Add purescript-behaviors backend (#85)

Author: paf31

index.html

@@ -73,6 +73,10 @@
               <input type="radio" name="backend_inputs" value="mathbox" id="backend_mathbox">
               <label for="backend_mathbox" title="Use the try-mathbox backend">Mathbox</label>
             </li>
+            <li>
+              <input type="radio" name="backend_inputs" value="behaviors" id="backend_behaviors">
+              <label for="backend_behaviors" title="Use the try-behaviors backend">Behaviors</label>
+            </li>
           </ul>
 
           <ul id="gists">

js/index.js

@@ -90,6 +90,15 @@ $(function() {
         extra_body: '',
         bundleAndExecute: defaultBundleAndExecute
       };
+    } else if (backend === "behaviors") {
+      return {
+        backend: "behaviors",
+        endpoint: "https://compile.purescript.org/behaviors",
+        mainGist: "ff1e87f0872d2d891e77d209d8f7706d",
+        extra_styling: '',
+        extra_body: '<canvas id="canvas" width="800" height="600"></canvas>',
+        bundleAndExecute: defaultBundleAndExecute
+      };
     } else { // core
       return {
         backend: "core",