Create CONTRIBUTING.nd

Author: chollier

CONTRIBUTING.md

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+Thanks for contributing, you rock!
+
+If you use our code, it is now *our* code.
+
+- [Think You Found a Bug?](#bug)
+- [Proposing New or Changed API?](#api)
+- [Issue Not Getting Attention?](#attention)
+- [Making a Pull Request?](#pr)
+- [Development](#development)
+- [Hacking](#hacking)
+
+<a name="bug"/>
+## Think You Found a Bug?
+
+Please provide a test case of some sort. Best is a pull request with a failing test. Next is a link to CodePen/JS Bin or repository that illustrates the bug. Finally, some copy/pastable code is acceptable.
+
+<a name="api"/>
+## Proposing New or Changed API?
+
+Please provide thoughtful comments and some sample code. Proposals without substance will be closed.
+
+<a name="attention"/>
+## Issue Not Getting Attention?
+
+If you need a bug fixed and nobody is fixing it, it is your responsibility to fix it. Issues with no activity for 30 days may be closed.
+
+<a name="pr"/>
+## Making a Pull Request?
+
+Do not include the results of `npm run build` / `npm run build-npm` / `npm run build-min`. This is done at the release cycle by the maintainer when publishing a new version.
+
+### Tests
+
+All commits that fix bugs or add features need a test.
+
+`<blink>`Do not merge code without tests.`</blink>`
+
+### Changelog
+
+All commits that change or add to the API must be done in a pull request that also:
+
+- Adds an entry to `CHANGES.md` with clear steps for updating code for changed or removed API
+- Updates examples
+- Updates the docs
+
+## Development
+
+- `npm test` starts a karma test runner and watch for changes
+- `npm run examples` starts a webpack dev server that will watch for changes and build the examples
+
+## Hacking
+
+The best way to hack on the router is to run examples.
+
+This guidelines are inspired by [reactjs/react-router](https://github.com/reactjs/react-router/blob/master/CONTRIBUTING.md)