Provide a way to configure location of executable in customLauncher

[pantosha]

Fix #125

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[birtles]

This looks great. Mind updating the commit message to 'feat:' instead of 'fix:'? I think this counts as a feature?

[pantosha]

This looks great. Mind updating the commit message to 'feat:' instead of 'fix:'? I think this counts as a feature?

@birtles, fixed

[birtles]

This looks great. Mind updating the commit message to 'feat:' instead of 'fix:'? I think this counts as a feature?

@birtles, fixed

Thanks!

[karmarunnerbot]

🎉 This PR is included in version 2.1.0 🎉

The release is available on:

• GitHub release
• npm package (@latest dist-tag)

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