New tool: supd

supd is a very simple tool that uploads everything from a directory to zfh.
Also some refactoring on sup.

sup

@@ -49,16 +49,14 @@ sup.env() {
 }
 
 sup.upload() {
-	curl -F file="@$file" \
+	curl -fsL \
+		-F file="@$file" \
 		-F upload_mode='api' \
 		-F flag_private="$flag_private" \
 		-F secret="$secret" \
 		-F submit="" \
-		"$cfg_script_url" -sL -A 'zerofiles.org upload script' || { return 1; }
-
-	(( "$flag_rm" )) && { rm "$file"; }
-
-	return 0
+		-A 'zerofiles.org upload script' \
+		"$cfg_script_url"
 }
 
 sup.mktemp() {
@@ -197,7 +195,14 @@ main() {
 		fi
 	fi
 
-	sup.upload
+	if sup.upload; then
+		if (( "$flag_rm" )); then
+			rm "$file"
+		fi
+	else
+		sup.err 'Something has gone wrong with the upload.'
+		return 7
+	fi
 }
 
 sup.set_argv "$@"