Fix AppVeyor (hopefully) and change targeted Rust version

CONTRIBUTING.md

@@ -1,9 +1,9 @@
 Contributing to coreutils
 =========================
 
-Contributions are very welcome, and should target Rust's master branch until
-Rust 1.0 is released. You may *claim* an item on the to-do list by following
-these steps:
+Contributions are very welcome, and should target Rust's master branch until the
+standard libraries are stabilized. You may *claim* an item on the to-do list by
+following these steps:
 
 1. Open an issue named "Implement [the utility of your choice]", e.g. "Implement ls"
 2. State that you are working on this utility.

README.md

@@ -1,8 +1,9 @@
 uutils coreutils
 ================
 
+[![License](http://img.shields.io/badge/license-MIT-blue.svg)](https://github.com/uutils/coreutils/blob/master/LICENSE)
 [![Build Status](https://api.travis-ci.org/uutils/coreutils.svg?branch=master)](https://travis-ci.org/uutils/coreutils)
-[![Build status](https://ci.appveyor.com/api/projects/status/xhlsa439de5ogodp?svg=true)](https://ci.appveyor.com/project/jbcrail/coreutils-o0l0r)
+[![Build status](https://ci.appveyor.com/api/projects/status/787ltcxgy86r20le?svg=true)](https://ci.appveyor.com/project/Arcterus/coreutils)
 
 uutils is an attempt at writing universal (as in cross-platform) CLI
 utils in [Rust](http://www.rust-lang.org). This repo is to aggregate the GNU
@@ -158,7 +159,7 @@ To do
 - dd
 - df
 - dircolors
-- expr
+- expr (almost done, no regular expressions)
 - getlimits
 - install
 - join