change readme instructions to use github releases. closes #187
change readme instructions to use github releases. closes #187

expa/herokuish,gliderlabs/herokuish,expa/herokuish,expa/herokuish,gliderlabs/herokuish,gliderlabs/herokuish,gliderlabs/herokuish,gliderlabs/herokuish,expa/herokuish,gliderlabs/herokuish,expa/herokuish,expa/herokuish,expa/herokuish,gliderlabs/herokuish,expa/herokuish,gliderlabs/herokuish