Changed to match existing code.

Tony Bedford · Tony Bedford · commit 86f35d9bcd56 · 2018-05-31T12:05:16.000+01:00
diff --git a/example.env b/example.env
@@ -1,4 +1,4 @@
-API_KEY='YOUR_API_KEY'
-API_SECRET='YOUR_API_SECRET'
+NEXMO_API_KEY='YOUR_API_KEY'
+NEXMO_API_SECRET='YOUR_API_SECRET'
 TO_NUMBER='EXAMPLE_TO_NUMBER'
 FROM_NUMBER='EXAMPLE_FROM_NUMBER'
