Generates scatter plots with density gradient for specified columns in input file

Author: Mudra Hegde
Email: mhegde@broadinstitute.org

To run this script, type the following on the terminal:
python gen_density_plots.py --input-file <Input file> --col1 <Column name for x-axis values> --col2 <Column name for x-axis values>

Input file should be a .txt file with header with columns of values to be plotted