Update mac.md (#1760)

add a troubleshooting hint

Update mac.md (#1760)
add a troubleshooting hint
a989853d · Eric · Me No Dev · 172802b1 · a989853d
Commit a989853d authored Aug 18, 2018 by Eric Committed by Me No Dev Aug 18, 2018
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docs/arduino-ide/mac.md docs/arduino-ide/mac.md +3 -1

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--- a/docs/arduino-ide/mac.md
+++ b/docs/arduino-ide/mac.md
@@ -21,5 +21,7 @@ Installation instructions for Mac OS
  
  ```xcode-select --install```
  
+- Try `python3` instead of `python` if you get the error: `IOError: [Errno socket error] [SSL: TLSV1_ALERT_PROTOCOL_VERSION] tlsv1 alert protocol version (_ssl.c:590)` when running `python get.py`
+
 - Restart Arduino IDE