diff --git a/bower.json b/bower.json
index 73d3b0e..0c9d8b9 100644
--- a/bower.json
+++ b/bower.json
@@ -1,6 +1,6 @@
 {
   "name": "d3-tip",
-  "version": "0.6.5",
+  "version": "0.6.6",
   "main": "index.js",
   "ignore": [
     "**/.*",
diff --git a/index.js b/index.js
index 1310f35..13b1e40 100644
--- a/index.js
+++ b/index.js
@@ -7,6 +7,12 @@
   if (typeof define === 'function' && define.amd) {
     // AMD. Register as an anonymous module with d3 as a dependency.
     define(['d3'], factory)
+  } else if (typeof module === 'object' && module.exports) {
+    // CommonJS
+    module.exports = function(d3) {
+      d3.tip = factory(d3)
+      return d3.tip
+    }
   } else {
     // Browser global.
     root.d3.tip = factory(root.d3)
diff --git a/package.json b/package.json
new file mode 100644
index 0000000..abc2323
--- /dev/null
+++ b/package.json
@@ -0,0 +1,28 @@
+{
+  "name": "d3-tip",
+  "version": "0.6.6",
+  "description": "Tooltips for d3 svg visualizations",
+  "author": "Justin Palmer <justin@labratrevenge.com> (http://labratrevenge.com/d3-tip)",
+  "main": "index.js",
+  "directories": {
+    "doc": "docs",
+    "example": "examples"
+  },
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/Caged/d3-tip"
+  },
+  "keywords": [
+    "d3",
+    "tooltip"
+  ],
+  "author": "Justin Palmer",
+  "license": "MIT",
+  "bugs": {
+    "url": "https://github.com/Caged/d3-tip/issues"
+  },
+  "homepage": "https://github.com/Caged/d3-tip"
+}