parallelize zdc and insert simulations (#74)

benchmarks/insert_muon/Snakefile

benchmarks/insert_muon/analysis/muon_plots.py

benchmarks/insert_muon/config.yml

benchmarks/insert_neutron/Snakefile

benchmarks/insert_neutron/analysis/neutron_plots.py

benchmarks/insert_neutron/config.yml

benchmarks/zdc_lambda/Snakefile

benchmarks/zdc_lambda/analysis/gen_lambda_decay.cxx

benchmarks/zdc_lambda/analysis/lambda_plots.py

benchmarks/zdc_lambda/config.yml

benchmarks/zdc_photon/Snakefile

benchmarks/zdc_photon/analysis/zdc_photon_plots.py

benchmarks/zdc_photon/config.yml

benchmarks/zdc_pi0/Snakefile

benchmarks/zdc_pi0/analysis/zdc_pi0_plots.py

benchmarks/zdc_pi0/config.yml

benchmarks/zdc_sigma/Snakefile

benchmarks/zdc_sigma/analysis/gen_sigma_decay.cxx

benchmarks/zdc_sigma/analysis/sigma_plots.py

benchmarks/zdc_sigma/config.yml