fixes #2850

[xconverge]

No description provided.

[TravisBuddy]

Hey @xconverge,
Something went wrong with the build.

TravisCI finished with status errored, which means the build failed because of something unrelated to the tests, such as a problem with a dependency or the build process itself.

[TravisBuddy]

Travis tests have failed

Hey @xconverge,
Please read the following log in order to understand the failure reason.
It'll be awesome if you fix what's wrong and commit the changes.

Node.js: 8

npm test --silent

### VS Code Extension Test Run ###
Current working directory: /home/travis/build/VSCodeVim/Vim
Downloading VS Code into "/home/travis/build/VSCodeVim/Vim/.vscode-test/stable" from: https://vscode-update.azurewebsites.net/1.25.1/linux-x64/stable