Here's how you can cash in on the billionaire investor's biggest bets.For roughly six decades, Warren Buffett has generated wealth-building returns for Berkshire Hathaway's shareholders. The legendary investor has an uncanny knack for finding superior businesses with underappreciated growth opportunities. Buffett's talents have made him one the wealthiest people in the world -- and created many millionaires among Berkshire's shareowners.You, too, could grow richer alongside Buffett by investing in his best ...