Added argparse support

README.md

@@ -2,19 +2,38 @@
 
 This script will convert the dsv save from drastic emulator to a melonDS save file
 
-How this works ?
+### How to use
 
-MelonDS determines save type using exact byte count in the save file
-Which needs to be a power of 2 as mentioned [here](http://melonds.kuribo64.net/faq.php).
-This script calculates the closest power of 2 to the save file and removes the padding
+You need python 3 installed.  
+Specify the input save file
 
-This can be easily done manually by removing the padding using a hex editor.
-Or using dd like this
+```bash
+./dr2mds.py "Pokemon Black.dsv"
+```
+
+This will make a "Pokemon Black.sav" file as output
+You can also specify the output like
+
+```bash
+./dr2mds.py "Pokemon Black.dsv" -o "PKMN.sav"
+```
+
+### How this works ?
+
+MelonDS determines the type of save using exact byte count in the save file
+
+Which needs to be a power of 2 as mentioned [here](http://melonds.kuribo64.net/faq.php).  
+In _Importing a savefile from another emulator_ part under _How to_ section
+
+This script calculates the closest power of 2 to the save file and removes the padding.
+
+### Other ways of doing this
+
+This can be done manually by removing the padding using a hex editor.
+Or using dd like this (on linux/macos)
 
 ```bash
 dd if=Pokemon.dsv of=Pokemon.sav bs=1 count=524288
 ```
 
 This will make a 4KiB EEPROM save from drastic to melonDS save.
-
-I will add argparse later.