Update README.md

README.md

@@ -8,7 +8,14 @@ Converter calls pxd32d5_d4.dll external methods used for unpacking PXD to raw bi
 ## Usage:
 Application uses .NET 4.8. It also uses pxd32d5_d4.dll which needs to be located in the same folder as compiled .exe. You can find .dll file inside of your eJay installation directories.
 Compile with MSBuild.exe or Visual Studio.
-Run compiled program with one argument as follows:
+
+If you want to convert only one file, run compiled program with one argument as follows:
 ```
 ./PXDConverter.exe pxd_file_location
 ```
+
+If you want to convert all .pxd files found in specified directory, run:
+```
+./PXDConverter.exe -all <folder_location>
+```
+If you don't specify <folder_location>, program will try to use current directory (where compiled .exe is executed) :octocat: