Use more appropriate types for cross-platform unicode support

Cargo.toml

@@ -13,6 +13,7 @@ lazy_static = "1"
 enum_primitive = "0.1"
 num = "0.1"
 bitflags = "1"
+widestring = "0.4"
 
 [dependencies.unrar_sys]
 path = "unrar_sys"

examples/basic_extract.rs

@@ -3,6 +3,6 @@ extern crate unrar;
 use unrar::Archive;
 
 fn main() {
-    Archive::new("archive.rar".into()).extract_to("./archive".into()).unwrap().process().unwrap();
+    Archive::new("archive.rar").unwrap().extract_to("./archive").unwrap().process().unwrap();
     println!("Done.");
 }

examples/basic_list.rs

@@ -3,7 +3,7 @@ extern crate unrar;
 use unrar::Archive;
 
 fn main() {
-    for entry in Archive::new("archive.rar".into()).list().unwrap() {
+    for entry in Archive::new("archive.rar").unwrap().list().unwrap() {
         println!("{}", entry.unwrap());
     }
 }

examples/lister.rs

@@ -15,7 +15,7 @@ fn main() {
         std::process::exit(0)
     });
 
-    match Archive::new(file).list_split() {
+    match Archive::new(&file).unwrap().list_split() {
         // Everything okay, just list the archive
         Ok(archive) => list_archive(archive),
 
@@ -46,7 +46,7 @@ fn main() {
                     println!("{}", e);
                     // emit warning that an error occured.
                     writeln!(&mut stderr,
-                             "Could not find volume: {}",
+                             "Could not find volume: {:?}",
                              e.next_volume.unwrap())
                         .unwrap();
                     // The iterator will stop by itself, no further action needed.