update doc

README.md

@@ -10,7 +10,6 @@ systray is a cross-platform Go library to place an icon and menu in the notifica
 
 ```go
 func main() {
-	// Should be called at the very beginning of main().
 	systray.Run(onReady, onExit)
 }
 
@@ -35,7 +34,15 @@ Have go v1.12+ or higher installed? Here's an example to get started on macOS:
 
 ```sh
 git clone https://github.com/getlantern/systray
-env GO111MODULE=on go run systray/example/main.go
+cd example
+env GO111MODULE=on go build
+./example
+```
+
+On Windows, you should build like this:
+
+```
+env GO111MODULE=on go build -ldflags "-H=windowsgui"
 ```
 
 The following text will then appear on the console:
@@ -55,13 +62,15 @@ Now look for *Awesome App* in your menu bar!
 
 ### Linux
 
-* Building apps requires the `gtk3` and `libappindicator3` development headers to be installed. For Debian or Ubuntu, you can may install these using:
+* Building apps requires the `gtk3`, `libappindicator3` and `libwebkit2gtk-4.0-dev` development headers to be installed. For Debian or Ubuntu, you can may install these using:
 
 ```sh
-sudo apt-get install libgtk-3-dev libappindicator3-dev
+sudo apt-get install libgtk-3-dev libappindicator3-dev libwebkit2gtk-4.0-dev
 ```
 
-* Checked menu items are not yet implemented
+To build the example, run `go build example/main.go`. Before building, remove `example/rsrc.syso` which is only used on Windows.
+
+* Submenu and checked menu items are not yet implemented
 
 
 ### Windows
@@ -86,9 +95,22 @@ SystrayApp.app/
       SystrayApp.icns
 ```
 
+When running as an app bundle, you may want to add one or both of the following to your Info.plist:
+
+```xml
+<!-- avoid having a blurry icon and text -->
+	<key>NSHighResolutionCapable</key>
+	<string>True</string>
+
+	<!-- avoid showing the app on the Dock -->
+	<key>LSUIElement</key>
+	<string>1</string>
+```
+
 Consult the [Official Apple Documentation here](https://developer.apple.com/library/archive/documentation/CoreFoundation/Conceptual/CFBundles/BundleTypes/BundleTypes.html#//apple_ref/doc/uid/10000123i-CH101-SW1).
 
 ## Credits
 
 - https://github.com/xilp/systray
 - https://github.com/cratonica/trayhost
+