Merge pull request #668 from mrfelton/fix/window-close-non-darwin

fix(app): quit when window closed on non-darwin

app/lib/zap/controller.js

@@ -119,11 +119,10 @@ class ZapController {
 
     // When the window is closed, just hide it unless we are force closing.
     this.mainWindow.on('close', e => {
-      if (this.mainWindow.forceClose) {
-        return
-      }
+      if (process.platform === 'darwin' && !this.mainWindow.forceClose) {
         e.preventDefault()
         this.mainWindow.hide()
+      }
     })
   }