Update index.md
Update index.md
Update index.md
Changed index page
Merged with develop
Added Verify your integration
Verify integration and basic payment

Added step verify integration in all customised payments. Changed
"Implement SEQR payments" to "Basic SEQR payment".
Updated webshop
Updated lists
Updated lists
Updated lists
Added section "Add API parameters" for all payments
Put methods in tables
Updated Basic SEQR payment
Format update
Adding missing <ul>
Narrowed the bo width to 20%
Narrowed the box width to 22%
added instruction to basic payment
New instruction under Get started