Reorganize the amd build script.

packages/html-manager/scripts/concat-amd-build.js

@@ -2,7 +2,17 @@
 // Distributed under the terms of the Modified BSD License.
 
 var fs = require('fs');
-var files = ['base.js', 'controls.js', 'index.js', 'libembed-amd.js', 'embed-amd-render.js'];
+
+// Make a script file that defines all of the relevant AMD modules
+var files = ['base.js', 'controls.js', 'index.js', 'libembed-amd.js'];
+var output = files.map((f)=>{
+    return fs.readFileSync('./dist/amd/'+f).toString();
+  }).join(';\n\n');
+fs.writeFileSync('./dist/libembed-amd.js', output)
+
+// Make a script that has all of the above AMD modules and runs a function which
+// renders all of the widgets on page load automatically.
+files = ['base.js', 'controls.js', 'index.js', 'libembed-amd.js', 'embed-amd-render.js'];
 var output = files.map((f)=>{
     return fs.readFileSync('./dist/amd/'+f).toString();
   }).join(';\n\n');