Merge pull request #15 from thehyve/london_hackathon

Remove wrong conversion to number
Updated ETL pipeline. Added restriction pd.gpl_id=upd.gpl_id, so that only the rows from the deapp.de_subj_sample_mapping are selected for the specific platform for which you want to load mRNA data
Merge remote-tracking branch 'origin/london_hackathon' into features/loading_vcf_data
Replaced sed command to run correctly on Mac