github issue and pr templates [ci skip]

Author: nfriedly

.github/issue_template.md

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+Remember, an issue is not the place to ask questions. You can use [Stack Overflow](http://stackoverflow.com/questions/tagged/ibm-watson-cognitive) for that, or you may want to start a discussion on the [dW Answers](https://developer.ibm.com/answers/questions/ask/?topics=watson).
+
+### When reporting a bug, please be sure to include the following:  
+- [ ] Steps to reproduce
+- [ ] Expected behavior
+- [ ] Actual behavior
+- [ ] Browser version(s)
+- [ ] SDK version

.github/pull_request_template.md

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+<!--
+Thank you for your pull request! 
+
+Please provide a description above and review the requirements below.
+
+Bug fixes and new features should include tests whenever possible.
+-->
+
+##### Checklist
+<!-- Remove items that do not apply. For completed items, change [ ] to [x]. -->
+
+- [ ] `npm test` passes (tip: `npm run autofix` can correct most style issues)
+- [ ] tests are included
+- [ ] readme and/or JSDoc is updated