changed RemixD's to `remixd`

docs/tutorial_remixd_filesystem.md

@@ -1,32 +1,32 @@
-Access your local filesystem by using RemixD
+Access your local filesystem by using remixd
 ===================================================
 
-RemixD is an npm module. Its purpose is to give the remix web
+`remixd` is an npm module. Its purpose is to give the remix web
 application access to a folder from your local computer.
 
-The code of RemixD can be checked out
+The code of `remixd` can be checked out
 [here](https://github.com/ethereum/remixd) .
 
-Remixd can be globally installed using the following command:
+`remixd` can be globally installed using the following command:
 `npm install -g remixd`.
 
-Then `remixd -s <absolute-path-to-the-shared-folder> --remix-ide <your-remix-ide-URL-instance>` will start Remixd
+Then `remixd -s <absolute-path-to-the-shared-folder> --remix-ide <your-remix-ide-URL-instance>` will start `remixd`
 and share the given folder. 
 
 For example, to sync your local folder to the official Remix IDE, 
 `remixd -s <absolute-path-to-the-shared-folder> --remix-ide https://remix.ethereum.org`
 
 The folder is shared using a websocket connection between `Remix IDE`
-and `Remixd`.
+and `remixd`.
 
-Be sure the user executing Remixd has read/write permission on the
+Be sure the user executing `remixd` has read/write permission on the
 folder.
 
 There is an option to run remixd in read-only mode, use `--read-only` flag.
 
 **Warning!**
 
-RemixD provides `full read and write access` to the given folder for `any
+`remixd` provides `full read and write access` to the given folder for `any
 application` that can access the `TCP port 65520` on your local host.
 
 From `Remix IDE`, you will need to activate the connection.