Update travis for spf13

.travis.yml

diff --git a/.travis.yml b/.travis.yml
index 4f2ee4d..c4d88e3 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1 +1,8 @@
+sudo: false
+
 language: go
+
+go:
+        - 1.3
+        - 1.4
+        - tip

README.md

diff --git a/README.md b/README.md
index d9b189f..6b355ca 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-[![Build Status](https://travis-ci.org/ogier/pflag.png?branch=master)](https://travis-ci.org/ogier/pflag)
+[![Build Status](https://travis-ci.org/spf13/pflag.svg?branch=master)](https://travis-ci.org/spf13/pflag)
 
 ## Description