[install] go get -u github.com/junegunn/fzf/src/fzf

install

@@ -230,12 +230,12 @@ if [ -n "$binary_error" ]; then
   if [ $binary_available -eq 0 ]; then
     echo "No prebuilt binary for $archi ..."
     if command -v go > /dev/null; then
-      echo -n "Building binary (go get github.com/junegunn/fzf/src/fzf) ... "
+      echo -n "Building binary (go get -u github.com/junegunn/fzf/src/fzf) ... "
       if [ -z "${GOPATH-}" ]; then
         export GOPATH="${TMPDIR:-/tmp}/fzf-gopath"
         mkdir -p "$GOPATH"
       fi
-      if go get github.com/junegunn/fzf/src/fzf; then
+      if go get -u github.com/junegunn/fzf/src/fzf; then
         echo "OK"
         cp "$GOPATH/bin/fzf" "$fzf_base/bin/"
       else