Add appveyor and example

appveyor.yml

@@ -0,0 +1,13 @@
+install:
+  - ps: Start-FileDownload 'https://static.rust-lang.org/dist/rust-nightly-i686-pc-windows-gnu.exe'
+  - rust-nightly-i686-pc-windows-gnu.exe /VERYSILENT /NORESTART /DIR="C:\Program Files (x86)\Rust"
+  - SET PATH=%PATH%;C:\Program Files (x86)\Rust\bin
+  - SET PATH=%PATH%;C:\MinGW\bin
+  - rustc -V
+  - cargo -V
+  - git submodule update --init --recursive
+
+build: false
+
+test_script:
+  - cargo test --verbose

examples/dump_yaml.rs

@@ -0,0 +1,46 @@
+extern crate yaml_rust;
+
+use std::env;
+use std::fs::File;
+use std::io::prelude::*;
+use yaml_rust::yaml;
+
+fn print_indent(indent: usize) {
+    for _ in 0..indent {
+        print!("    ");
+    }
+}
+
+fn dump_node(doc: &yaml::Yaml, indent: usize) {
+    match doc {
+        &yaml::Yaml::Array(ref v) => {
+            for x in v {
+                dump_node(x, indent + 1)
+            }
+        },
+        &yaml::Yaml::Hash(ref h) => {
+            for (k, v) in h {
+                print_indent(indent);
+                println!("{:?}:", k);
+                dump_node(v, indent + 1)
+            }
+        },
+        _ => {
+            print_indent(indent);
+            println!("{:?}", doc);
+        }
+    }
+}
+
+fn main() {
+    let args: Vec<_> = env::args().collect();
+    let mut f = File::open(&args[1]).unwrap();
+    let mut s = String::new();
+    f.read_to_string(&mut s).unwrap();
+
+    let docs = yaml::YamlLoader::load_from_str(&s).unwrap();
+    for doc in &docs {
+        println!("---");
+        dump_node(doc, 0);
+    }
+}