fix: update to spec

pkgr/src/commands/mod.rs

@@ -1,7 +1,8 @@
 use crate::package::identifier::PackageIdentifier;
+use crate::prelude::Arguments;
 
 pub enum Command {
-    Grab(PackageIdentifier), // grab a package from a remote source
+    Install(Arguments, PackageIdentifier), // install a package from a remote source
     Remove(PackageIdentifier), // remove a package from the local source
     List, // list all packages in the local source
     Update,

pkgr/src/main.rs

@@ -5,6 +5,7 @@ use std::str::FromStr;
 use getopts::Options;
 use log::{info, SetLoggerError};
 
+mod prelude;
 mod commands;
 mod package;
 

pkgr/src/prelude.rs

@@ -0,0 +1 @@
+pub struct Arguments(Vec<String>);