Merge pull request #1 from jwheare/master

1) Mobile PINsentry support. 2) extract_html_statement method
Reinstate checking for card number with OTP
Export different accounts separately
Fix apparent form differences when account doesn't have mobile auth
Handle different numbers of requested digits
Force SSLv3 to prevent connection reset by peer error
Emulate Windows IE user-agent
Add cacert.pem
Specify export type, because Barclays now defaults to CSV
Version 2.0, with CasperJS
Readme tweaks
Bring back export_csv html statement parsing and move more abstraction to barclayscrape lib