update installation docs on how to test. closes #711
update installation docs on how to test. closes #711

udp3f/gemini,arq5x/gemini,arq5x/gemini,bgruening/gemini,brentp/gemini,udp3f/gemini,bgruening/gemini,brentp/gemini,udp3f/gemini,udp3f/gemini,bgruening/gemini,arq5x/gemini,brentp/gemini,bgruening/gemini,arq5x/gemini,brentp/gemini