updated readme

README.md

@@ -3,3 +3,18 @@
 <p align="center">
   Find, Sort, Filter & Delete duplicate files 
 </p>
+
+<h2 align="center">Usage</h2>
+
+```bash
+Usage: deduplicator [OPTIONS]
+
+Options:
+  -t, --types <TYPES>    Filetypes to deduplicate (default = all)
+  -d, --delete <DELETE>  Delete files by algorithm (default = oldest) [options = oldest | newest]
+      --dir <DIR>        Run Deduplicator on dir different from pwd
+  -h, --help             Print help information
+  -V, --version          Print version information
+```
+
+<h2 align="center">Screenshots</h2>