diff --git a/README.md b/README.md
index e793446..6c33609 100644
--- a/README.md
+++ b/README.md
@@ -32,13 +32,15 @@ A valid (read: that follows this abstraction) stream muxer, must implement the f
 
 ### Attach muxer to a transport
 
-- `Node.js` muxer.attach(transport, function (err, conn))
-- `Go` conn, err := muxer.Attach(transport)
+- `Node.js` muxer.attach(transport, isListener, function (err, conn))
+- `Go` conn, err := muxer.Attach(transport, isListener)
 
 This method attaches our stream muxer to the desired transport (UDP, TCP) and returns/callbacks with the `err, conn`(error, connection).
 
 If `err` is passed, no operation should be made in `conn`.
 
+`isListener` is a bool that tells the side of the socket we are, `isListener = true` for listener/server and `isListener = false` for dialer/client side.
+
 `conn` abstracts our established Connection with the other endpoint, it must offer an interface to open a stream inside this connection and to receive incomming stream requests.
 
 ### Dial(open/create) a new stream
diff --git a/package.json b/package.json
new file mode 100644
index 0000000..4f399fa
--- /dev/null
+++ b/package.json
@@ -0,0 +1,28 @@
+{
+  "name": "abstract-stream-muxer",
+  "version": "0.0.0",
+  "description": "A test suite and interface you can use to implement a stream muxer.",
+  "main": "src/index.js",
+  "directories": {
+    "test": "tests"
+  },
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/diasdavid/abstract-stream-muxer.git"
+  },
+  "keywords": [
+    "Streams",
+    "Muxer",
+    "Abstract",
+    "Interface"
+  ],
+  "author": "David Dias <daviddias@ipfs.io>",
+  "license": "MIT",
+  "bugs": {
+    "url": "https://github.com/diasdavid/abstract-stream-muxer/issues"
+  },
+  "homepage": "https://github.com/diasdavid/abstract-stream-muxer"
+}