Merge pull request #87 from HaraldNordgren/go_versions

Bump Go versions and use 1.n.x to get latest minor versions

Author: satori

.travis.yml

@@ -1,12 +1,12 @@
 language: go
 sudo: false
 go:
-    - 1.6
-    - 1.7
-    - 1.8
-    - 1.9
-    - "1.10"
-    - 1.11
+    - 1.6.x
+    - 1.7.x
+    - 1.8.x
+    - 1.9.x
+    - 1.10.x
+    - 1.11.x
     - tip
 matrix:
     allow_failures: