Add ISSUE_TEMPLATE for github issues

.github/ISSUE_TEMPLATE.md

@@ -0,0 +1,17 @@
+### Are you creating an issue in the correct repository?
+
+- When in doubt, create an issue here.
+- If you have an issue with the Jasmine docs, file an issue in the docs repo
+  here: https://github.com/jasmine/jasmine.github.io
+- This repository is for the core Jasmine framework
+- If you are using a test runner that wraps Jasmine (Jasmine npm, karma, etc),
+  consider filing an issue with that library if appropriate
+
+### When submitting an issue, please answer the following:
+
+ - What version are you using?
+ - What environment are you running Jasmine in (node, browser, etc)?
+ - How are you running Jasmine (standalone, npm, karma, etc)?
+ - If possible, include an example spec that demonstrates your issue.
+
+ Thanks for using Jasmine!