update travis

Author: mitchellhenke

.travis.yml

@@ -3,28 +3,28 @@ elixir:
   - 1.3.4
   - 1.4
   - 1.5
-  - 1.6.0
+  - 1.6
 otp_release:
   - 18.3
   - 19.3
-  - 20.0
+  - 20.2
 env:
   - MIX_FORMAT=true
   - MIX_FORMAT=false
 matrix:
   exclude:
-    - elixir: 1.6.0
+    - elixir: 1.6
       env: MIX_FORMAT=false
     - elixir: 1.3.4
       env: MIX_FORMAT=true
     - elixir: 1.4
       env: MIX_FORMAT=true
     - elixir: 1.5
       env: MIX_FORMAT=true
-    - elixir: 1.6.0
+    - elixir: 1.6
       otp_release: 18.3
     - elixir: 1.3.4
-      otp_release: 20.0
+      otp_release: 20.2
 notifications:
   email:
     - [email protected]