Refactor conekta token generation scripts
Fix pull request comments
Use name_on_card instead of name to avoid conflicts with other payment ateways
Add some tests
Merge branch 'javascript-fixes'

* javascript-fixes:
  Fix pull request comments
  Refactor conekta token generation scripts
Merge branch 'credit-card-fix'

* credit-card-fix:
  Add some tests
  Use name_on_card instead of name to avoid conflicts with other payment ateways