Remove BOM character from UTF-8 encoded file.

With ruby, if you read a file and find characters like this on beginning of file:

\xEF\xBB\xBF

These are BOM characters. By encoding the content forcefully into UTF-8 these characters will get removed. Do something like this:

file = File.open("#{file_name}\\game.json", "r") 
content = file.read.force_encoding("UTF-8")

Done.