is.xyz.vcmi: added installation instructions

metadata/is.xyz.vcmi.yml

@@ -10,9 +10,13 @@ Description: |-
 
     This is an VCMI port for Android. To play it, you need to use your own, legally acquired Heroes of Might and Magic III data files.
 
-    Note: extra display resolutions and random map generation templates are only available with official "essentials" mod files
-    (Warning, external link) https://wiki.vcmi.eu/Mod_list#Utilities
-    (contents of Mods/vcmi/Mods in the archive should be copied to Mods folder in the root of your VCMI data files installation).
+    Installation: Copy "Data" "Maps" and "Mp3" folders from your original HoMM III installation to "<internal storage>/vcmi-data/".
+
+    Note: extra display resolutions and random map generation templates are only available with official "essentials" mod:
+    (Warning, external link): https://wiki.vcmi.eu/Mod_list#Utilities
+
+    "Essentials" installation: copy "Mods/vcmi/Mods" folder from the archive to the root of your VCMI installation ("<internal storage>/vcmi-data").
+    Mods should appear in the game launcher "mods" section.
 
 RepoType: git
 Repo: https://github.com/vcmi/vcmi-android.git