Added more unit tests, up to 98% coverage. Fixed the Gruntfile so it's not a cluster-f**k anymore.

grunt/config/s3.js

@@ -0,0 +1,29 @@
+var config = require('../../.aws-config.json');
+
+module.exports = {
+  options: {
+    key: config.key,
+    secret: config.secret,
+    bucket: 'download.elasticsearch.org',
+    access: 'public-read'
+  },
+
+  latest: {
+    upload: [
+      {
+        src: '<%= distDir %>/*.js',
+        dest: 'elasticsearch/elasticsearch-js/latest'
+      }
+    ]
+  },
+
+  release: {
+    upload: [
+      {
+        src: '<%= distDir %>/*.js',
+        dest: 'elasticsearch/elasticsearch-js/<%= package.version %>'
+      }
+    ]
+  }
+
+};