Submit AboutCode Manager to Electron Applications

[jdaguil]

Submit AboutCode Manager to Electron's list of Apps. See https://github.com/electron/electron-apps/blob/master/contributing.md

[vsvipul]

Opened a PR related to this here
electron/apps#987

[vsvipul]

@MaJuRG this can be closed, i guess

[steven-esser]

@vsvipul Thanks.