v1.0.2

Fixes:

• postinstall: warn when git executable does not run
• publish: remove unneeded files from published package
• LICENSE: add file to match package.json's MIT

Other:

• test(utils): use git to reset the state of test-repo …
• refactor(postinstall): return early to simplify branching paths
• chore(package): release v1.0.2