no_of_mapped_trait.tsv: is the final file contains number of reported traits, number of mapped traits
for each gene in GRCh37 assembly based on the gwas_catalog_v1.0.1-associations_e84_r2016-04-24.tsv and gwas_catalog_trait-mappings_r2016-04-24.tsv
gwas_catalog_v1.0.1-associations_e84_r2016-04-24.tsv: downloaded from gwas_catalog ftp
gwas_catalog_trait-mappings_r2016-04-24.tsv:downloaded from gwas_catalog ftp
demo.py: the scripts that used for generating no_of_mapped_trait.tsv file