Merge branch 'hotfix/0.3.1'
Handle multiple pic_numbers in SCANForm and RefundRequest #5594

Updated API to handle multiple pic_numbers for SCANForm and
RefundRequest.
Added travis.yml
Merge pull request #1 from tarunbhardwaj/multiple_pic_number_5594

Handle multiple pic_numbers in SCANForm and RefundRequest #5594
Release version 0.4.0
Merge branch 'release/0.4.0'
Added Rates API