Merge pull request #69 from johnSchnake/travisUpdate

Remove go 1.3 and 1.4 from travis; add 1.6

.travis.yml

diff --git a/.travis.yml b/.travis.yml
index c7d8e05..780c7ff 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,9 +3,8 @@
 language: go
 
 go:
-        - 1.3
-        - 1.4
         - 1.5
+        - 1.6
         - tip
 
 install: