Add Appveyor configuration for Windows

.appveyor.yml

@@ -0,0 +1,23 @@
+os: Visual Studio 2015
+
+version: "{build}"
+
+environment:
+  matrix:
+    - channel: stable
+      target: x86_64-pc-windows-msvc
+    - channel: nightly
+      target: x86_64-pc-windows-msvc
+
+install:
+  - appveyor DownloadFile https://win.rustup.rs/ -FileName rustup-init.exe
+  - rustup-init -yv --default-toolchain %channel% --default-host %target%
+  - set PATH=%PATH%;%USERPROFILE%\.cargo\bin
+  - rustc -vV && cargo -vV
+
+build_script:
+  - cargo build --verbose
+
+test_script:
+  - cargo test --verbose
+

README.md

@@ -1,6 +1,7 @@
 # findutils
 
 [![Build Status](https://travis-ci.org/google/findutils.svg?branch=master)](https://travis-ci.org/google/findutils)
+[![Build status](https://ci.appveyor.com/api/projects/status/ynsfw6dohm5npykd/branch/master?svg=true)](https://ci.appveyor.com/project/antiagainst/findutils/branch/master)
 
 Rust implementation of [GNU findutils](https://www.gnu.org/software/findutils/).