Update README.md

Author: arucil

README.md

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 # XPBox
-This is 1.10.2 port for Minecraft MOD ExPContainer (made by clocka [[OP Link]](http://forum.minecraftuser.jp/viewtopic.php?t=15105)).  
-This MOD adds a block that stores players' xp and persists, be it broken or the player is dead (acting like ender chests).
+This is a Minecraft 1.10.2 MOD introducing a XP container, inspired by ExPContainer made by clocka [[OP Link]](http://forum.minecraftuser.jp/viewtopic.php?t=15105).  
+This MOD adds a block that stores players' xp and persists, be it broken or the player is dead (acting like ender chests).  
+1.12 version is on branch `mc-1.12`.