quant passes no error if no manifest is passed

[hbeale]

When I mistakenly ran quant before creating the manifest, it did not complain

example command

docker run --rm \
-v /mnt/:/mnt \
splicedice_analysis:latest \
splicedice quant -m ${this_base_dir}/analysis/quant_manifest.txt \
-o ${this_base_dir}/analysis/

std out

Parsing manifest...
        Done [0:00:0.00]
Getting all junctions from 0 files...
        Done [0:00:0.00]
Finding clusters from 0 junctions...
        Done [0:00:0.00]
Writing cluster file...
        Done [0:00:0.00]
Writing junction bed file...
        Done [0:00:0.00]
Gathering junction counts...
        Done [0:00:0.00]
Writing inclusion counts...
        Done [0:00:0.00]
Calculating PS values...
        Done [0:00:0.00]
Writing PS values...
        Done [0:00:0.00]
All done [0:00:0.00]

i was using splicedice commit 970d652