metadata task and json data

The rakefile shouldn't delete the metadata task, since the
ability to generate JSON metadata from the cookbooks directory
is still useful.

Lets also ship the metadata in JSON in the cookbooks, so others can
make use of it without having to run any Ruby.

metadata.json

@@ -0,0 +1,52 @@
+{
+  "maintainer": "Opscode, Inc.",
+  "description": "Installs ruby packages",
+  "recommendations": {
+
+  },
+  "maintainer_email": "[email protected]",
+  "suggestions": {
+
+  },
+  "platforms": {
+    "ubuntu": [
+
+    ],
+    "fedora": [
+
+    ],
+    "centos": [
+
+    ],
+    "debian": [
+
+    ],
+    "redhat": [
+
+    ]
+  },
+  "version": "0.7.0",
+  "recipes": {
+    "ruby": ""
+  },
+  "name": "ruby",
+  "conflicting": {
+
+  },
+  "attributes": {
+
+  },
+  "providing": {
+    "ruby": [
+
+    ]
+  },
+  "license": "Apache 2.0",
+  "long_description": "",
+  "replacing": {
+
+  },
+  "dependencies": {
+
+  }
+}