Added pull request and issue templates for GitHub.

.github/ISSUE_TEMPLATE.md

@@ -0,0 +1,8 @@
+Thank you for choosing to reporting an issue with Corda. 
+
+When reporting an issue please make sure it contains;
+
+* A clear description of the issue
+* Any logs or stack traces that you can provide
+* Steps to reproduce the issue
+* The version/tag/release or commit hash it occured on

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,16 @@
+Thank you for choosing to contribute to Corda. As a contributor please read [CONTRIBUTING](../contributing.md) before
+contributing.
+
+## PR Process
+
+Your PR must be approved by one or more reviewers and all tests must be passed on [TeamCity CI](https://ci.corda.r3cev.com) 
+in order to be merged. 
+
+Once you have submitted a PR you are responsible for keeping it up to date until the time it is merged.
+
+## PR Checklist
+
+1. Ensure you have done any relevant automated and manual testing.
+2. Add your changes to the changelog.
+3. Update any documentation relating to your changes.
+