improved README
improved README

udp3f/gemini,xuzetan/gemini,bgruening/gemini,bpow/gemini,bw2/gemini,udp3f/gemini,brentp/gemini,arq5x/gemini,brentp/gemini,bw2/gemini,bw2/gemini,udp3f/gemini,bgruening/gemini,heuermh/gemini,xuzetan/gemini,udp3f/gemini,bgruening/gemini,bpow/gemini,xuzetan/gemini,heuermh/gemini,heuermh/gemini,bpow/gemini,xuzetan/gemini,bw2/gemini,bpow/gemini,brentp/gemini,heuermh/gemini,brentp/gemini,bgruening/gemini,arq5x/gemini,arq5x/gemini,arq5x/gemini