Please create GitHub release for version 1.0.0

[favoyang]

HI @Unity-Harry,

Thanks for make the awesome UPM package.

I'm the creator of OpenUPM, a public UPM registry with automatic build pipelines that publish packages based on git tags. You can read the announcement on medium to get the basic idea, so far it hosts 100+ packages as of Jan 2020.

You package Unity-AssetDependencyGraph has been submitted. To make it useful, could you please create the first GitHub releases? The git tag should be equal to the version of package.json which is 1.0.0.

I also create the PR #5 to update docs and the badge.