Proposed ISSUE_TEMPLATE.md

Resolving https://github.com/mszep/pandoc_resume/issues/40

ISSUE_TEMPLATE.md

@@ -0,0 +1,17 @@
+### Expected Behavior
+
+### Actual Behavior
+
+### Steps to reproduce the behavior
+
+### Versions
+
+Pandoc and context versions
+
+    pandoc --version
+    context --version
+    
+OS information on non-Windows can use one of the following commands
+    
+    cat /etc/*-release
+    lsb_release -a