New structure for static data limit and fix eune server in readme file

[BBoyBreaker]

I don't know if this is the best way to manage the new Riot static data limit but i think this is a good approach to fix this with a support to force the cache to be refreshed, and Thank you for your awesome work.

[kevinohashi]

If anyone else wants to try this out and let us know what you think, if it's good, it can be merged.