Updated Travis builds to use only >= 1.2 - noted in the README

.travis.yml

@@ -1,5 +1,8 @@
 language: go
 
 go:
-  - 1.1
+  - 1.2
+  - 1.3
+  - 1.4
+  - 1.5
   - tip

README.md

@@ -5,6 +5,8 @@ email
 
 Robust and flexible email library for Go
 
+*Note: This library requires Go 1.2 or above*
+
 ### Email for humans
 The ```email``` package is designed to be simple to use, but flexible enough so as not to be restrictive. The goal is to provide an *email interface for humans*.
 
@@ -64,4 +66,4 @@ Sections inspired by the handy [gophermail](https://github.com/jpoehls/gophermai
 ### Contributors
 I'd like to thank all the [contributors and maintainers](https://github.com/jordan-wright/email/graphs/contributors) of this package.
 
-A special thanks goes out to Jed Denlea [jeddenlea](https://github.com/jeddenlea) for his numerous contributions and optimizations.
+A special thanks goes out to Jed Denlea [jeddenlea](https://github.com/jeddenlea) for his numerous contributions and optimizations.