Signup added. Backend added

node_modules/@mapbox/node-pre-gyp/contributing.md

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+# Contributing
+
+
+### Releasing a new version:
+
+- Ensure tests are passing on travis and appveyor
+- Run `node scripts/abi_crosswalk.js` and commit any changes
+- Update the changelog
+- Tag a new release like: `git tag -a v0.6.34 -m "tagging v0.6.34" && git push --tags`
+- Run `npm publish`