Add issue template for github.

ISSUE_TEMPLATE.md

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+**Affected Plugin**
+
+
+**Describe your environment**
+<!--- Please replace the "affected plugin" with the actual name of the plugin in question. -->
+<!--- If it is Factions, please delete that line. -->
+* Affected Plugin version: 
+* Factions version: 
+* MassiveCore version: 
+* Spigot version: 
+* Config pastebin: 
+
+**Steps to reproduce this bug**
+<!--- Provide an unambiguous set of steps to reproduce this bug. -->
+  1. _____
+  2. _____
+  3. _____
+
+**Observed results**
+<!--- Tell us what has happened. This can be a description -->
+<!--- a screenshot posted on imgur.com or a log error output posted on pastebin.com. -->
+<!--- Ideally, do a combination of all three. -->
+
+
+**Expected results**
+<!--- Tell us what should happen -->