Cannot run the demo

[kelvin-dev]

How to run the demo ? below are error logs
Plz help investigate, thank you

D:\Demos\react-navigation-web>npm run release

@react-navigation/[email protected] release D:\Demos\react-navigation-web
release-it

ERROR Working dir must be clean.
Please either stage and commit your changes, or use the requireCleanWorkingDir: false option to include the changes in the release commit.
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! @react-navigation/[email protected] release: release-it
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the @react-navigation/[email protected] release script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR! D:\Roaming\npm-cache_logs\2018-11-24T22_00_26_223Z-debug.log

D:\Demos\react-navigation-web>npm run release

@react-navigation/[email protected] release D:\Demos\react-navigation-web
release-it

ERROR Working dir must be clean.
Please either stage and commit your changes, or use the requireCleanWorkingDir: false option to include the changes in the release commit.
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! @react-navigation/[email protected] release: release-it
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the @react-navigation/[email protected] release script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

[kelvin-dev]

@here built-in web support is the great feature towards the community, plz help update README also so we can run the example smoothly
Cheer and happy coding !