Create Issue and Pull Request Templates

[thephilgray]

Setup default templates to prevent lazy, unhelpful issue and pull request descriptions.

Review sample templates

• [ ] https://github.com/devspace/awesome-github-templates
• [ ] https://github.com/stevemao/github-issue-templates

Setup default templates

• [ ] https://help.github.com/articles/about-issue-and-pull-request-templates/