Added initial Android implementation (with plugin.xml and JS interface)

www/zBar.js

@@ -0,0 +1,16 @@
+var argscheck = require('cordova/argscheck'),
+    exec      = require('cordova/exec');
+
+function ZBar () {};
+
+ZBar.prototype = {
+
+    scan: function (params, success, failure)
+    {
+        argscheck.checkArgs('*fF', 'CsZBar.scan', arguments);
+        exec(success, failure, 'CsZBar', 'scan', [params]);
+    },
+
+};
+
+module.exports = new ZBar;