Include the version number in the build files.

Makefile

@@ -80,6 +80,7 @@ po2json:
 
 .PHONY: release
 release:
+	sed -i s/Version:\ [0-9]\.[0-9]\.[0-9]/Version:\ $(VERSION)/ src/converse.js
 	sed -i s/Project-Id-Version:\ Converse\.js\ [0-9]\.[0-9]\.[0-9]/Project-Id-Version:\ Converse.js\ $(VERSION)/ locale/converse.pot
 	sed -i s/\"version\":\ \"[0-9]\.[0-9]\.[0-9]\"/\"version\":\ \"$(VERSION)\"/ bower.json
 	sed -i s/\"version\":\ \"[0-9]\.[0-9]\.[0-9]\"/\"version\":\ \"$(VERSION)\"/ package.json

src/converse.js

-/* Converse.js components configuration
+/* Converse.js
  *
- * This file is used to tell require.js which components (or plugins) to load
- * when it generates a build.
+ * Version: 3.0.0
  */
 /*global define */
 
 if (typeof define !== 'undefined') {
-    /* When running tests, define is not defined. */
+    // The section below determines which plugins will be included in a build
     define([
         "converse-core",
         // PLEASE NOTE: By default all translations are included.