fix links

README.md

@@ -53,8 +53,8 @@ The goal is to have only projects that are mostly stable and useful to users.
 * [MaidSafe](http://maidsafe.net/) — a decentralized platform.
 * Operating systems
   * [A comparison of operating systems written in Rust](https://github.com/flosse/rust-os-comparison)
-  * [redox-os/redox](redox-os/redox) — [<img src="https://travis-ci.org/redox-os/redox.svg?branch=master">](https://travis-ci.org/redox-os/redox)
-  * [thepowersgang/rust_os](thepowersgang/rust_os) — [<img src="https://travis-ci.org/thepowersgang/rust_os.svg?branch=master">](https://travis-ci.org/thepowersgang/rust_os)
+  * [redox-os/redox](https://github.com/redox-os/redox) — [<img src="https://travis-ci.org/redox-os/redox.svg?branch=master">](https://travis-ci.org/redox-os/redox)
+  * [thepowersgang/rust_os](https://github.com/thepowersgang/rust_os) — [<img src="https://travis-ci.org/thepowersgang/rust_os.svg?branch=master">](https://travis-ci.org/thepowersgang/rust_os)
 * [seppo0010/rsedis](https://github.com/seppo0010/rsedis) — a Redis reimplementation [<img src="https://travis-ci.org/seppo0010/rsedis.svg?branch=master">](https://travis-ci.org/seppo0010/rsedis)
 * [Servo](https://github.com/servo/servo) — a prototype web browser engine
 * [uutils/coreutils](https://github.com/uutils/coreutils) — a cross-platform Rust rewrite of the GNU coreutils [<img src="https://travis-ci.org/uutils/coreutils.svg?branch=master">](https://travis-ci.org/uutils/coreutils)