Create ISSUE_TEMPLATE.md (#282)

.github/ISSUE_TEMPLATE.md

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+### Step 1: Are you in the right place?
+GitHub issues only for **bugs** or **improvements** of the library. All other topics, e.g. hardware/programming, will be closed.
+
+For general support from the community, see [Arduino Forum](https://forum.arduino.cc/) or [StackOverflow](https://stackoverflow.com/questions/tagged/mifare).
+
+### Step 2: Describe your environment
+
+ * OS version: _____
+ * Arduino IDE version: _____
+ * MFRC522 Library version: _____
+ * Arduino device: _____
+ * MFRC522 device: _____
+  
+### Step 3: Describe the problem
+
+#### Affected file(s) or example(s):
+  
+  * Filename 1
+  * Filename 2
+  
+#### Steps to reproduce:
+
+  1. _____
+  2. _____
+  3. _____
+  
+#### Observed Results:
+
+  * What happened?  This could be a description, log output, etc.
+  
+#### Expected Results:
+
+  * What did you expect to happen?
+  
+#### Relevant Code:
+
+```arduino
+  // TODO(you): code here to reproduce the problem
+```