Update elixir version in travis config

bryanjos · bryanjos · commit a3d1a76096dd · 2018-01-17T19:33:20.000-06:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,7 +1,7 @@
 sudo: false
 language: elixir
 elixir:
-  - 1.6.0-otp-20
+  - 1.6.0
 otp_release:
   - 20.2
 env:
