Adding an issues template

Author: Matt Gaunt

ISSUE_TEMPLATE.md

@@ -0,0 +1,25 @@
+# Setup
+
+> Please provide the following details, the more info you can provide the
+> better.
+
+*Operating System*: <Linux | Windows | OS X>
+*Node Version*: <4.2 | 6.0 | ...>
+*web-push Version*: <1.0.0>
+
+# Problem
+
+> Please explain what behaviour you are seeing.
+
+# Expected
+
+> Please explain what you expected to happen
+
+# Example / Reproduce Case
+
+> Please provide a code sample that reproduces the issue. If there is a
+> repository that reproduces the issue please put the link here.
+
+# Other
+
+> Please put any remaining notes here.