added docs for the new command

COMMANDS.MD

@@ -14,14 +14,14 @@ For an entire list of commands, you can run `php artisan list`
 - [Indexer](#indexer)
     - [Anime](#indexer-anime)
     - [Manga](#indexer-manga)
-  
+
 ## Commands
 
 ### Serve
 Command: `serve`
 Example: `php artisan serve`
 
-Serve the application on the PHP development server 
+Serve the application on the PHP development server
 
 ### Queue
 
@@ -98,7 +98,7 @@ This function only needs to be run once. Any entry's cache updating will automat
 
 Command:
 ```
-indexer:anime
+indexer:manga
     {--failed : Run only entries that failed to index last time}
     {--resume : Resume from the last position}
     {--reverse : Start from the end of the array}
@@ -109,3 +109,16 @@ indexer:anime
 Example: `indexer:manga`
 
 This simply translates to running the indexer without any additional configuration.
+
+#### Indexer: Incremental
+Incrementally indexes media entries from MAL.
+This command will compare the latest version of MAL ids from the [mal_id_cache](https://github.com/purarue/mal-id-cache)
+github repository and compares them with the downloaded ids from the previous run. If no ids found from the previous run, a full indexing session is started.
+
+Command:
+```
+indexer:incremental {mediaType*}
+    {--failed : Run only entries that failed to index last time}
+    {--resume : Resume from the last position}
+    {--delay=3 : Set a delay between requests}
+```