Add configuration keys in README
Add configuration keys in README

MattKetmo/swarrot,olaurendeau/swarrot,stof/swarrot,olaurendeau/swarrot,MattKetmo/swarrot,swarrot/swarrot,adrienbrault/swarrot,odolbeau/swarrot,swarrot/swarrot,lafourchette/swarrot,metfan/swarrot,lafourchette/swarrot,stof/swarrot,metfan/swarrot,adrienbrault/swarrot,odolbeau/swarrot