Merge pull request #2456 from ethereum/remixdHelp

update remixd usage

libs/remixd/src/bin/remixd.ts

@@ -60,13 +60,12 @@ function errorHandler (error: any, service: string) {
   program.version(version, '-v, --version')
 
   program
-    .usage('-s <shared folder>')
+    .description('Establish a two-way websocket connection between the local computer and Remix IDE for a folder')
-    .description('Provide a two-way connection between the local computer and Remix IDE')
+    .option('-u, --remix-ide  <url>', 'URL of remix instance allowed to connect')
-    .option('-u, --remix-ide  <url>', 'URL of remix instance allowed to connect to this web sockect connection')
+    .option('-s, --shared-folder <path>', 'Folder to share with Remix IDE (Default: CWD)')
-    .option('-s, --shared-folder <path>', 'Folder to share with Remix IDE')
     .option('-r, --read-only', 'Treat shared folder as read-only (experimental)')
     .on('--help', function () {
-      console.log('\nExample:\n\n    remixd -s ./ -u http://localhost:8080')
+      console.log('\nExample:\n\n    remixd -s ./shared_project -u http://localhost:8080')
     }).parse(process.argv)
   // eslint-disable-next-line