rename list-courses -> get-courses

Author: Heliozoa

tmc-langs-cli/src/app.rs

@@ -238,7 +238,7 @@ pub fn create_app() -> App<'static, 'static> {
                     .required(true)
                     .takes_value(true)))
 
-            .subcommand(SubCommand::with_name("list-courses")
+            .subcommand(SubCommand::with_name("get-courses")
                 .about("List courses.")
                 .arg(Arg::with_name("organization")
                     .help("Organization slug (e.g. mooc, hy).")

tmc-langs-cli/src/main.rs

@@ -628,7 +628,7 @@ fn run() -> Result<()> {
                 data: Some(course_details),
             };
             print_output(&output)?;
-        } else if let Some(matches) = matches.subcommand_matches("list-courses") {
+        } else if let Some(matches) = matches.subcommand_matches("get-courses") {
             let organization_slug = matches.value_of("organization").unwrap();
             let courses = core
                 .list_courses(organization_slug)