Extension issue

- Issue Type: `Bug`
- Extension Name: `vscode-node-red`
- Extension Version: `0.2.0`
- OS Version: `Darwin x64 19.2.0`
- VSCode version: `1.41.0`

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```json
{
"messages": [],
"activationTimes": {
"codeLoadingTime": 5510,
"activateCallTime": 176,
"activateResolvedTime": 5857,
"activationReason": {
"startup": true,
"extensionId": {
"value": "formulahendry.vscode-node-red",
"_lower": "formulahendry.vscode-node-red"
},
"activationEvent": "*"
}
},
"runtimeErrors": [
{
"name": "Error",
"message": "Cannot find module 'glob'\nRequire stack:\n- /Users/mikestaceygee/.vscode/extensions/vsciot-vscode.vscode-iot-device-cube-0.1.4/out/vendor/node-usb-native/lib/native_loader.js\n- /Users/mikestaceygee/.vscode/extensions/vsciot-vscode.vscode-iot-device-cube-0.1.4/out/vendor/node-usb-native/lib/bindings.js\n- /Users/mikestaceygee/.vscode/extensions/vsciot-vscode.vscode-iot-device-cube-0.1.4/out/vendor/node-usb-native/lib/detector.js\n- /Users/mikestaceygee/.vscode/extensions/vsciot-vscode.vscode-iot-device-cube-0.1.4/out/vendor/node-usb-native/lib/index.js\n- /Users/mikestaceygee/.vscode/extensions/vsciot-vscode.vscode-iot-device-cube-0.1.4/out/src/models/serialportctrl.js\n- /Users/mikestaceygee/.vscode/extensions/vsciot-vscode.vscode-iot-device-cube-0.1.4/out/node_modules/impor/out/index.js\n- /Users/mikestaceygee/.vscode/extensions/vsciot-vscode.vscode-iot-device-cube-0.1.4/out/src/extension.js\n- /Applications/Visual Studio Code-2.app/Contents/Resources/app/out/vs/loader.js\n- /Applications/Visual Studio Code-2.app/Contents/Resources/app/out/bootstrap-amd.js\n- /Applications/Visual Studio Code-2.app/Contents/Resources/app/out/bootstrap-fork.js"
}
]
}
```