Create ISSUE_TEMPLATE.md

Author: nseidle

ISSUE_TEMPLATE.md

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+### Subject of the issue
+Describe your issue here. If you reference a datasheet please specify which one and in which section (ie, the protocol manual, section 5.1.2). Additionally, screenshots are easy to paste into github.
+
+### Your workbench
+* What development board or microcontroller are you using?
+* What version of hardware or breakout board are you using? 
+* How is the breakout board wired to your microcontroller?
+* How is everything being powered?
+* Are there any additional details that may help us help you?
+
+### Steps to reproduce
+Tell us how to reproduce this issue. Please post stripped down example code demonstrating your issue.
+
+### Expected behavior
+Tell us what should happen
+
+### Actual behavior
+Tell us what happens instead