Updated icon for 3.0

package.json

@@ -18,7 +18,7 @@
     ],
     "main": "./extension",
     "preview": false,
-    "icon": "sublime_keyboard.png",
+    "icon": "sublime_keyboard_with_padding.png",
     "repository": {
         "type": "git",
         "url": "https://github.com/Microsoft/vscode-sublime-keybindings.git"