improve cli help text

and add a `-w` as short for `--chdir`

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "http-server"
-version = "0.10.1"
+version = "0.10.2"
 authors = ["Damjan Georgievski <gdamjan@gmail.com>"]
 license = "MIT"
 readme = "README.md"

src/main.rs

@@ -7,15 +7,17 @@ fn main() -> std::io::Result<()> {
                 .version(clap::crate_version!())
                 .about(clap::crate_description!())
                 .arg(clap::Arg::with_name("chdir")
+                    .short("w")
                     .long("chdir")
                     .value_name("DIRECTORY")
-                    .help("Specify directory to server")
+                    .help("directory to serve")
                     .default_value(".")
                     .takes_value(true))
                 .arg(clap::Arg::with_name("addr")
+                    .short("b")
                     .long("bind")
                     .value_name("ADDRESS")
-                    .help("Specify alternate bind address")
+                    .help("bind address")
                     .default_value("0.0.0.0")
                     .takes_value(true))
                 .arg(clap::Arg::with_name("port")