Add GitHub issue template

.github/ISSUE_TEMPLATE.md

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+Thank you for opening an issue on an Adafruit Python library repository.  To
+improve the speed of resolution please review the following guidelines and
+common troubleshooting steps below before creating the issue:
+
+- **Do not use GitHub issues for troubleshooting projects and issues.**  Instead use
+  the forums at http://forums.adafruit.com to ask questions and troubleshoot why
+  something isn't working as expected.  In many cases the problem is a common issue
+  that you will more quickly receive help from the forum community.  GitHub issues
+  are meant for known defects in the code.  If you don't know if there is a defect
+  in the code then start with troubleshooting on the forum first.
+
+- **If following a tutorial or guide be sure you didn't miss a step.** Carefully
+  check all of the steps and commands to run have been followed.  Consult the
+  forum if you're unsure or have questions about steps in a guide/tutorial.
+
+- **For Python/Raspberry Pi projects check these very common issues to ensure they don't apply**:
+
+  - If you are receiving an **ImportError: No module named...** error then a
+    library the code depends on is not installed.  Check the tutorial/guide or
+    README to ensure you have installed the necessary libraries.  Usually the
+    missing library can be installed with the `pip` tool, but check the tutorial/guide
+    for the exact command.  
+
+  - **Be sure you are supplying adequate power to the board.**  Check the specs of
+    your board and power in an external power supply.  In many cases just
+    plugging a board into your computer is not enough to power it and other
+    peripherals.
+
+  - **Double check all soldering joints and connections.**  Flakey connections
+    cause many mysterious problems.  See the [guide to excellent soldering](https://learn.adafruit.com/adafruit-guide-excellent-soldering/tools) for examples of good solder joints.
+
+If you're sure this issue is a defect in the code and checked the steps above
+please fill in the following fields to provide enough troubleshooting information.
+You may delete the guideline and text above to just leave the following details:
+
+- Platform/operating system (i.e. Raspberry Pi with Raspbian operating system,
+  Windows 32-bit, Windows 64-bit, Mac OSX 64-bit, etc.):  **INSERT PLATFORM/OPERATING
+  SYSTEM HERE**
+
+- Python version (run `python -version` or `python3 -version`):  **INSERT PYTHON
+  VERSION HERE**
+
+- Error message you are receiving, including any Python exception traces:  **INSERT
+  ERROR MESAGE/EXCEPTION TRACES HERE***
+
+- List the steps to reproduce the problem below (if possible attach code or commands
+  to run): **LIST REPRO STEPS BELOW**