chore: updated descriptions of some commands

Author: Ishara-Vithanage

.idea/.gitignore

@@ -31,4 +31,14 @@ public void execute(String[] args, ShellContext context) {
             System.out.println((f.isDirectory() ? "<DIR> " : "      ") + f.getName());
         }
     }
+
+    @Override
+    public String description() {
+        return "Display the contents of working directory.";
+    }
+
+    @Override
+    public String usage() {
+        return "dir";
+    }
 }

.idea/compiler.xml

@@ -25,4 +25,14 @@ public void execute(String[] args, ShellContext context) {
             System.out.println(String.join(" ", args));
         }
     }
+
+    @Override
+    public String description() {
+        return "Display a line of text";
+    }
+
+    @Override
+    public String usage() {
+        return "echo <text>";
+    }
 }

.idea/jarRepositories.xml

@@ -21,4 +21,14 @@ public void execute(String[] args, ShellContext context) {
         System.out.println("Exiting MyCMD...");
         System.exit(0);
     }
+
+    @Override
+    public String description() {
+        return "Exit the program.";
+    }
+
+    @Override
+    public String usage() {
+        return "exit";
+    }
 }

.idea/misc.xml

@@ -20,4 +20,14 @@ public class WhoamiCommand implements Command {
     public void execute(String[] args, ShellContext context) {
         System.out.println(System.getProperty("user.name"));
     }
+
+    @Override
+    public String description() {
+        return "Display the username of logged in user";
+    }
+
+    @Override
+    public String usage() {
+        return "whoami";
+    }
 }