added ISSUE_TEMPLATE

ISSUE_TEMPLATE.md

@@ -0,0 +1,21 @@
+**Board:** ARDUINO UNO
+**Library Version:** 2.1.0
+**Protocol:** Sony (if any)
+
+**Code Block:**
+```c
+
+#include <IRremote.h> 
+
+.....
+
+```
+
+Use [a gist](gist.github.com) if the code exceeds 30 lines
+
+**checklist:**
+- [] The latest [release](https://github.com/z3t0/Arduino-IRremote/releases/latest) is used
+- [] Any code referenced is provided
+- [] The title of the issue is helpful and relevant 
+
+The above is a short template allowing you to make detailed issues!