diff --git a/README.md b/README.md
index 03ac252..304f600 100644
--- a/README.md
+++ b/README.md
@@ -72,10 +72,34 @@ sp.write("BLOOP!"); // "Arduino says, BLOOP!"
 
 ### node-serialport methods/events:
 
-#### sp.write(data)
+#### sp.open(callback)
+Simulates the port opening. It returns the callback execution and emits the `open` event on
+`process.nextTick()`
+
+Writes data to the virtual device. Equivalent to `sp.emit("dataToDevice", data)`.
 
+#### sp.write(data)
 Writes data to the virtual device. Equivalent to `sp.emit("dataToDevice", data)`.
 
+#### sp.isOpen()
+Returns boolean indicating wether the port is open or not. It returns the value of `sp.open` which
+you may set manually.
+
+#### sp.pause()
+This method is for API compatibility. It actually does nothing here.
+
+#### sp.resume()
+This method is for API compatibility. It actually does nothing here.
+
+#### sp.flush(callback)
+This method is for API compatibility. It actually does nothing and returns the callback call.
+
+#### sp.drain(callback)
+This method is for API compatibility. It actually does nothing and returns the callback call.
+
+#### sp.close(callback)
+This method is for API compatibility. It actually does nothing and returns the callback call.
+
 #### sp.on("open", function(err) { ... } )
 
 Runs function once `SerialPort` is ready, as you would with an actual `SerialPort` instance.
@@ -93,6 +117,13 @@ Writes data to computer. Equivalent to `sp.emit("data", data)`
 #### sp.on("dataToDevice", function(data) { ... })
 Act on data sent to the device.
 
+## Parsers
+
+`node-serialport` is listed as an optional dependency. If some version of `node-serialport` is
+installed, `virtual-serialport` will load it's parsers.
+
+For more information about parsers, please refer to the specific version of `node-serialport` docs.
+
 ## TODO
 - move to automated testing (assertions and more)
 - better match voodootikigod's node-serialport api
diff --git a/index.js b/index.js
index c5debfb..5edd565 100644
--- a/index.js
+++ b/index.js
@@ -25,7 +25,7 @@ VirtualSerialPort.prototype.open = function open(callback) {
         this.emit('open');
     }.bind(this));
     if(callback) {
-        callback();
+        return callback();
     }
 };
 
@@ -38,7 +38,7 @@ VirtualSerialPort.prototype.write = function write(buffer, callback) {
     // This callback should receive both an error and result, however result is
     // undocumented so I do not know what it should contain
     if(callback) {
-        callback();
+        return callback();
     }
 };
 
@@ -50,20 +50,20 @@ VirtualSerialPort.prototype.resume = function resume() {
 
 VirtualSerialPort.prototype.flush = function flush(callback) {
     if(callback) {
-        callback();
+        return callback();
     }
 };
 
 VirtualSerialPort.prototype.drain = function drain(callback) {
     if(callback) {
-        callback();
+        return callback();
     }
 };
 
 VirtualSerialPort.prototype.close = function close(callback) {
     this.removeAllListeners();
     if(callback) {
-        callback();
+        return callback();
     }
 };
 
@@ -74,7 +74,7 @@ VirtualSerialPort.prototype.isOpen = function isOpen() {
 try {
     var SerialPort = require('serialport');
     if (SerialPort.SerialPort) {
-        // for v2.x serialport API 
+        // for v2.x serialport API
         VirtualSerialPort = {
             SerialPort: VirtualSerialPort,
             parsers: SerialPort.parsers
@@ -87,6 +87,4 @@ catch(error) {
     console.warn('VirtualSerialPort - NO parsers available');
 }
 
-
-
 module.exports = VirtualSerialPort;
diff --git a/package.json b/package.json
index c45a8ee..f716473 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "virtual-serialport",
-  "version": "0.2.1",
+  "version": "0.3.0",
   "description": "A drop-in virtual replacement for node-serialport's SerialPort object",
   "main": "index.js",
   "directories": {