Move creating EventReader to the library

Before this commit parse took an EventReader. Change so that it takes a
Buffer

README.md

@@ -9,20 +9,17 @@ Read maps from the [Tiled Map Editor](http://www.mapeditor.org/) into rust for u
 
 ```rust
 extern crate serialize;
-extern crate xml;
 extern crate tiled;
 
 use std::io::File;
 use std::io::BufferedReader;
-use xml::reader::EventReader;
 use tiled::parse;
 
 fn main() {
     let file = File::open(&Path::new("assets/tiled_base64_zlib.tmx")).unwrap();
     println!("Opened file");
     let reader = BufferedReader::new(file);
-    let mut parser = EventReader::new(reader);
-    let map = parse(&mut parser).unwrap();
+    let map = parse(reader).unwrap();
     println!("{}", map);
     println!("{}", map.get_tileset_by_gid(22));
 }

examples/main.rs

-#![feature(globs)]
-
 extern crate serialize;
-extern crate xml;
 extern crate tiled;
 
 use std::io::File;
 use std::io::BufferedReader;
-use xml::reader::EventReader;
 use tiled::parse;
 
 fn main() {
     let file = File::open(&Path::new("assets/tiled_base64_zlib.tmx")).unwrap();
     println!("Opened file");
     let reader = BufferedReader::new(file);
-    let mut parser = EventReader::new(reader);
-    let map = parse(&mut parser).unwrap();
+    let map = parse(reader).unwrap();
     println!("{}", map);
     println!("{}", map.get_tileset_by_gid(22));
 }

src/lib.rs

@@ -449,12 +449,13 @@ fn parse_data<B: Buffer>(parser: &mut EventReader<B>, attrs: Vec<Attribute>, wid
 
 /// Parse a buffer hopefully containing the contents of a Tiled file and try to
 /// parse it.
-pub fn parse<B: Buffer>(parser: &mut EventReader<B>) -> Result<Map, TiledError> {
+pub fn parse<B: Buffer>(reader: B) -> Result<Map, TiledError> {
+    let mut parser = EventReader::new(reader);
     loop {
         match parser.next() {
             StartElement {name, attributes, ..}  => {
                 if name.local_name[] == "map" {
-                    return Map::new(parser, attributes);
+                    return Map::new(&mut parser, attributes);
                 }
             }
             EndDocument => return Err(PrematureEnd("Document ended before map was parsed".to_string())),