Add CONTRIBUTING AND ISSUE_TEMPLATE

[ci skip]

Signed-off-by: Alex Coles <alex@alexbcoles.com>

CONTRIBUTING.md

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+## How to contribute to Roar
+
+#### **Did you find a bug?**
+
+* **Ensure the bug was not already reported** by searching on GitHub under [Issues](https://github.com/trailblazer/roar/issues).
+
+* If you're unable to find an open issue addressing the problem, [open a new one](https://github.com/trailblazer/roar/issues/new). Be sure to follow the issue template.
+
+#### **Did you write a patch that fixes a bug?**
+
+* Open a new GitHub pull request with the patch.
+
+* Ensure the PR description clearly describes the problem and solution. Include the relevant issue number if applicable.
+
+* All code in pull requests is assumed to be MIT licensed.  Do not submit a pull request if that isn't the case.
+
+#### **Do you intend to add a new feature or change an existing one?**
+
+* Suggest your change in the [Trailblazer Gitter Room](https://gitter.im/trailblazer/chat) and start writing code.
+
+* Do not open an issue on GitHub until you have collected positive feedback about the change. GitHub issues are primarily intended for bug reports and fixes.
+
+#### **Do you have questions using Roar?**
+
+* Ask any questions about how to use Roar in the [Trailblazer Gitter Room](https://gitter.im/trailblazer/chat). Github issues are restricted to bug reports and fixes.
+
+* GitHub Issues should not be used as a help forum and any such issues will be closed.
+
+#### **Do you want to contribute to the Roar documentation?**
+
+* Roar documentation is provided via the [Trailblazer site](http://trailblazer.to/gems/roar/) and not the repository readme. Please add your contributions to the [Trailblazer site repository](https://github.com/trailblazer/trailblazer.github.io)

ISSUE_TEMPLATE.md

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+Note: If you have a question about Roar, would like help using
+Roar, want to request a feature, or do anything else other than
+submit a bug report, please use the Trailblazer gitter channel.
+
+### Complete Description of Issue
+
+
+### Steps to reproduce
+
+
+### Expected behavior
+Tell us what should happen
+
+### Actual behavior
+Tell us what happens instead
+
+### System configuration
+**Roar version**:
+
+### Full Backtrace of Exception (if any)