Update readme

Author: Toryalai1

README.md

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 # Arcade Database for MiSTer
 
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 The ArcadeDatabase_[MiSTer](https://github.com/MiSTer-devel/Wiki_MiSTer/wiki) repo contains files and lists about the different arcade core MRAs that are available for MiSTer.
 
-Anything missing in the database or have a suggestion? Create an issue ticket or submit a pull request.
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+# How to contribute
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+To make it easier for users to contribute, we now have automation.
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+If you want to add or update entries in the database, follow these simple steps:
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+1. Download the current CSV file from the repository.
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+  
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+2. Edit it locally with your changes (you can import it to excel if you want to, just note the delimiter we use is comma).
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+  
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+3. Upload your modified CSV file to the ArcadeDatabase_CSV folder and make a pull request.
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+4. Once your CSV file is uploaded and the pull request is merged, the automation script will process it and update the database accordingly.
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+  
 
 # Naming convention
-Since it is important to know exactly what version of the game you play, I've decided to go for the following naming convention:  
-Game Name (Country, Version) [bl/hb].  
-Country should follow the [Alpha-2](https://www.iban.com/country-codes) country code.  
-[bl] means Bootleg  
+
+Since it is important to know exactly what version of the game you play, I've decided to go for the following naming convention:
+
+Game Name (Country, Version) [bl/hb].
+
+Country should follow the [Alpha-2](https://www.iban.com/country-codes) country code.
+
+[bl] means Bootleg
+
 [hb] means Homebrew
 
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+
 # Preferred version
+
 As you might've noticed, there are different versions/clones of the same game. Sometimes the preferred version is documented, and sometimes it is not. Basic rule of thumb is the following (from MAME doc):
 
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+
 ```
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 - Prefer latest release version
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 - Prefer English language
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 - Prefer most widespread release
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 - Prefer most complete version
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 - Prefer versions that are uncensored, and have story/cutscenes intact
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 - Prefer versions that keep the original gameplay balance
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 - Prefer releases from original developers/publishers rather than licensees
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 - Prefer releases without region-specific notices or warnings
-```
+
+```