Update README.md

README.md

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 # gcc-voice-migration-tool
 Renames voice files from old Grand Chase client (2003-2015) so that they can used in Steam's rerelease (2021).
+
+## options
+```
+-s, --source <source> (REQUIRED)
+-c, --compare <compare> (REQUIRED)
+-d, --destination <destination> (REQUIRED)
+-l, --locale <locale>
+```
+
+## example usage (Batch)
+```bat
+:: Brazilian portuguese (old-school dub, unavailable in Steam)
+GccVoiceMigrationTool.exe ^
+	-s "C:\Source\br-classic" ^
+	-c "C:\Source\br-kr-us" ^
+	-d "C:\Destination\br-classic"
+
+:: Brazilian portuguese (2012 redub)
+GccVoiceMigrationTool.exe ^
+	-s "C:\Source\br-kr-us" ^
+	-c "C:\Source\br-kr-us" ^
+	-d "C:\Destination\br" ^
+	-l br
+
+:: English
+GccVoiceMigrationTool.exe ^
+	-s "C:\Source\br-kr-us" ^
+	-c "C:\Source\br-kr-us" ^
+	-d "C:\Destination\us" ^
+	-l us
+
+:: Korean
+GccVoiceMigrationTool.exe ^
+	-s "C:\Source\br-kr-us" ^
+	-c "C:\Source\br-kr-us" ^
+	-d "C:\Destination\kr" ^
+	-l "" kr &:: the objective of the empty string as first argument is to also include files that do not have a locale marker (they are in Korean by default)
+
+:: Japanese (non-official dub, unavailable in Steam)
+GccVoiceMigrationTool.exe ^
+	-s "C:\Source\jp" ^
+	-c "C:\Source\br-kr-us" ^
+	-d "C:\Destination\jp"
+```