Create ISSUE_TEMPLATE.md

.github/ISSUE_TEMPLATE.md

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+Please answer the following questions. 
+
+### Which version of matterbridge are you using?
+run ```matterbridge -version```
+
+### If you're having problems with mattermost please specify mattermost version. 
+
+
+### Please describe the expected behavior.
+
+
+### Please describe the actual behavior. 
+#### Use logs from running ```matterbridge -debug``` if possible.
+
+
+### Any steps to reproduce the behavior?
+
+
+### Please add your configuration file 
+#### (be sure to exclude or anonymize private data (tokens/passwords))