Add ISSUE_TEMPLATE.md and PULL_REQUEST_TEMPLATE.md (#157)

* Create ISSUE_TEMPLATE.md

* Create PULL_REQUEST_TEMPLATE.md

.github/ISSUE_TEMPLATE.md

@@ -0,0 +1,16 @@
+<!--
+  Thanks for participating in this project!
+  Please:
+    - make sure you are using the latest version of the library.
+    - do at least one GitHub search in current issues, maybe your question is already here
+-->
+
+**Do you want to request a *feature* or report a *bug*?**
+
+**What is the current behavior?**
+
+**If the current behavior is a bug, please provide all the steps to reproduce and a minimal
+[JSFiddle](https://jsfiddle.net/) example or a repository on GitHub that we can `npm install`
+and `npm start`.**
+
+**What is the expected behavior?**

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,20 @@
+<!--
+  Thanks for submitting a pull request!
+  Please provide enough information so that others can review your pull request.
+-->
+
+**Summary**
+
+<!--
+  Explain the **motivation** for making this change.
+  What existing problem does the pull request solve?
+  Are there any linked issues?
+-->
+
+**Result**
+
+<!--
+  Demonstrate the code is solid.
+  Example: The exact commands you ran and their output,
+  screenshots / videos if the pull request changes UI.
+-->