(Reuters) - Payments startup Stripe said on Wednesday it has raised $245 million in funding, better positioning the company to expand to new markets globally and attract bigger customers. Patrick Collison, co-founder and CEO at Stripe, delivers a keynote speech at the Mobile World Congress in Barcelona, Spain February 24, 2016. REUTERS/Albert Gea The new funding round values San Francisco-based Stripe, whose products make it easier for companies to accept online payments and bill customers,...