Merge pull request #75 from cloudflare/kyle/travis-containerise

Migrate Travis to containerised builds; bump Go version

.travis.yml

@@ -1,5 +1,6 @@
+sudo: false
 language: go
-go: 1.2
+go: 1.4
 script:
   - go get golang.org/x/tools/cmd/vet
   - go get github.com/cloudflare/redoctober
@@ -10,5 +11,6 @@ notifications:
     recipients:
       - nick@cloudflare.com
       - kyle@cloudflare.com
+      - zi@cloudflare.com
     on_success: never
     on_failure: change