Updated ROM instructions (#7)

Removed deprecate rom build instructions and added new build instructions with link to wiki page

README.txt

@@ -53,26 +53,19 @@
 
                                 *** Attention ***
 
-ROM is not included. In order to use this arcade, you need to provide a correct ROM file.
+ROMs are not included. In order to use this arcade, you need to provide the
+correct ROMs.
 
-Find this zip file somewhere. You need to find the file exactly as required.
-Do not rename other zip files even if they also represent the same game - they are not compatible!
-The name of zip is taken from M.A.M.E. project, so you can get more info about
-hashes and contained files there.
+To simplify the process .mra files are provided in the releases folder, that
+specifies the required ROMs with checksums. The ROMs .zip filename refers to the
+corresponding file of the M.A.M.E. project.
 
-To generate the ROM using Windows:
-1) Copy the zip into "releases" directory
-2) Execute bat file - it will show the name of zip file containing required files.
-3) Put required zip into the same directory and execute the bat again.
-4) If everything will go without errors or warnings, then you will get the a.*.rom file.
-5) Copy generated a.*.rom into root of SD card along with the Arcade-*.rbf file
+Please refer to https://github.com/MiSTer-devel/Main_MiSTer/wiki/Arcade-Roms for
+information on how to setup and use the environment.
 
-To generate the ROM using Linux/MacOS:
-1) Copy the zip into "releases" directory
-2) Execute build_rom.sh
-3) Copy generated a.*.rom into root of SD card along with the Arcade-*.rbf file
+Quickreference for folders and file placement:
 
-To generate the ROM using MiSTer:
-1) scp "releases" directory along with the zip file onto MiSTer:/media/fat/
-2) Using OSD execute build_rom.sh
-3) Copy generated a.*.rom into root of SD card along with the Arcade-*.rbf file
+/_Arcade/<game name>.mra
+/_Arcade/cores/<game rbf>.rbf
+/_Arcade/mame/<mame rom>.zip
+/_Arcade/hbmame/<hbmame rom>.zip