minor updates: print version, readme for deb...

Cargo.toml

@@ -1,9 +1,9 @@
 [package]
-name = "you_dl"
-version = "0.1.0"
+name = "you-dl"
+version = "0.3.0"
 authors = ["L-oris <loris4526@gmail.com>"]
 edition = "2018"
-default-run = "you_dl"
+default-run = "you-dl"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 

README.md

@@ -7,13 +7,21 @@ A tiny and easy to use YouTube downloader.
 
 ## Installation
 
-Available for macOS:
+#### On macOS (or Linux) via Homebrew
 
 ```sh
 brew tap l-oris/you-dl
 brew install you-dl
 ```
 
+#### On Ubuntu (and other Debian-based Linux distributions)
+
+Download the latest `.deb` package from the [release](https://github.com/l-oris/you-dl/releases) page and install it via:
+
+```sh
+sudo dpkg -i you-dl-amd64.deb
+```
+
 ## Usage
 
 ```sh

src/config/config_error.rs

@@ -6,7 +6,7 @@ pub struct ConfigError(pub String);
 
 impl fmt::Display for ConfigError {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        write!(f, "failed to parse program arguments: {}", self.0)
+        write!(f, "invalid program arguments: {}", self.0)
     }
 }
 

src/config/raw_cli_args.rs

@@ -1,5 +1,5 @@
 use super::ConfigError;
-use clap::{App, Arg};
+use clap::{crate_version, App, Arg};
 
 #[derive(Debug)]
 pub struct RawCliArgs {
@@ -17,6 +17,7 @@ const USE_WRAPPER_ARG: &str = "wrapper";
 
 pub fn parse() -> Result<RawCliArgs, ConfigError> {
     let mut app = App::new("you-dl")
+        .version(crate_version!())
         .arg(
             Arg::new(URL_ARG)
                 .value_name("URL")