Update README

Fixes #209.

README.md

@@ -1,10 +1,12 @@
+# systray
+
 systray is a cross-platform Go library to place an icon and menu in the notification area.
 
 ## Features
 
 * Supported on Windows, macOS, and Linux
 * Menu items can be checked and/or disabled
-* Methods may be called from any Goroutine
+* Most functions may be called from any goroutine
 
 ## API
 
@@ -49,15 +51,6 @@ On Windows, you should build like this:
 env GO111MODULE=on go build -ldflags "-H=windowsgui"
 ```
 
-The following text will then appear on the console:
-
-
-```sh
-go: finding github.com/skratchdot/open-golang latest
-go: finding github.com/getlantern/systray latest
-go: finding github.com/getlantern/golog latest
-```
-
 Now look for *Awesome App* in your menu bar!
 
 ![Awesome App screenshot](example/screenshot.png)

systray.go

@@ -71,8 +71,8 @@ func newMenuItem(title string, tooltip string, parent *MenuItem) *MenuItem {
 	}
 }
 
-// Run initializes GUI and starts the event loop, then invokes the onReady
-// callback. It blocks until systray.Quit() is called.
+// Run initializes GUI and starts the event loop, then invokes the onReady callback. It blocks until
+// systray.Quit() is called. It must be run from the main thread on macOS.
 func Run(onReady func(), onExit func()) {
 	Register(onReady, onExit)
 	nativeLoop()
@@ -106,7 +106,7 @@ func Register(onReady func(), onExit func()) {
 	registerSystray()
 }
 
-// Quit the systray
+// Quit the systray. This can be called from any goroutine.
 func Quit() {
 	quitOnce.Do(quit)
 }