Merge branch 's3' of github.com:harmony-one/harmony into check_md5sum_after_download

scripts/node.sh

@@ -246,7 +246,7 @@ any_new_binaries() {
    ${do_not_download} && return 0
    outdir="${1:-.}"
    mkdir -p "${outdir}"
-   curl http://${BUCKET}.s3.amazonaws.com/${FOLDER}md5sum.txt -o "${outdir}/md5sum.txt.new" || return $?
+   curl -sSf http://${BUCKET}.s3.amazonaws.com/${FOLDER}md5sum.txt -o "${outdir}/md5sum.txt.new" || return $?
    if diff $outdir/md5sum.txt.new md5sum.txt
    then
       rm "${outdir}/md5sum.txt.new"
@@ -298,7 +298,7 @@ download_binaries() {
    outdir="${1:-.}"
    mkdir -p "${outdir}"
    for bin in "${BIN[@]}"; do
-      curl http://${BUCKET}.s3.amazonaws.com/${FOLDER}${bin} -o "${outdir}/${bin}" || return $?
+      curl -sSf http://${BUCKET}.s3.amazonaws.com/${FOLDER}${bin} -o "${outdir}/${bin}" || return $?
       verify_checksum "${outdir}" "${bin}" md5sum.txt || return $?
       msg "downloaded ${bin}"
    done