Modernize the doc subcommand

src/bin.rs

@@ -12,7 +12,7 @@ fn run(global: GlobalOptions, subcommand: Subcommand) -> anyhow::Result<()> {
         Subcommand::Build(build_options) => cli::build(build_options)?,
         Subcommand::Upload(upload_options) => cli::upload(upload_options)?,
         Subcommand::FmtProject(subcommand) => subcommand.run()?,
-        Subcommand::Doc => cli::doc()?,
+        Subcommand::Doc(subcommand) => subcommand.run()?,
         Subcommand::Plugin(plugin_options) => cli::plugin(plugin_options)?,
     }
 

src/cli/doc.rs

@@ -1,4 +1,12 @@
-pub fn doc() -> Result<(), anyhow::Error> {
+use structopt::StructOpt;
+
+/// Open Rojo's documentation in your browser.
+#[derive(Debug, StructOpt)]
+pub struct DocCommand {}
+
+impl DocCommand {
+    pub fn run(self) -> anyhow::Result<()> {
         opener::open("https://rojo.space/docs")?;
         Ok(())
     }
+}

src/cli/mod.rs

@@ -22,7 +22,7 @@ use structopt::StructOpt;
 use thiserror::Error;
 
 pub use self::build::*;
-pub use self::doc::*;
+pub use self::doc::DocCommand;
 pub use self::fmt_project::FmtProjectCommand;
 pub use self::init::{InitCommand, InitKind};
 pub use self::plugin::*;
@@ -114,9 +114,7 @@ pub enum Subcommand {
     Upload(UploadCommand),
 
     FmtProject(FmtProjectCommand),
-
+    Doc(DocCommand),
-    /// Open Rojo's documentation in your browser.
-    Doc,
 
     /// Manages Rojo's Roblox Studio plugin.
     Plugin(PluginCommand),