Fix links in the README

Fixes #5.

Signed-off-by: Paul Osborne <osbpau@gmail.com>

Author: posborne

README.md

@@ -1,10 +1,10 @@
 # rust-sysfs-pwm
 
-[![Build Status](https://travis-ci.org/rust-embedded/rust-sysfs-pwm.svg?branch=master)](https://travis-ci.org/posborne/rust-sysfs-pwm)
+[![Build Status](https://travis-ci.org/rust-embedded/rust-sysfs-pwm.svg?branch=master)](https://travis-ci.org/rust-embedded/rust-sysfs-pwm)
 [![Version](https://img.shields.io/crates/v/sysfs-pwm.svg)](https://crates.io/crates/sysfs-pwm)
-[![License](https://img.shields.io/crates/l/sysfs-pwm.svg)](https://github.com/posborne/rust-sysfs-pwm/blob/master/README.md#license)
+[![License](https://img.shields.io/crates/l/sysfs-pwm.svg)](README.md#license)
 
-- [API Documentation](http://posborne.github.io/rust-sysfs-pwm/)
+- [API Documentation](https://docs.rs/sysfs-pwm)
 
 rust-sysfs-pwm is a rust library/crate providing access to the [Linux
 sysfs PWM interface](https://www.kernel.org/doc/Documentation/pwm.txt).