make travis happy

Author: zookzook

.travis.yml

@@ -1,14 +1,16 @@
 sudo: required
 language: elixir
 
+elixir:
+  - 1.8
+  - 1.9
+
 matrix:
   include:
     - elixir: '1.6'
       otp_release: '19.3'
     - elixir: '1.7'
       otp_release: '19.3'
-    - elixir: '1.8'
-    - elixir: '1.9'
 
 install:
   - wget http://fastdl.mongodb.org/linux/mongodb-linux-x86_64-${MONGODB}.tgz