(Reuters) – King, the company behind the hit mobile phone game “Candy Crush Saga,” is planning a U.S. stock market debut that some analysts think could value it at more than $5 billion and herald a flurry of technology company listings this year. The successful flotation of Twitter in November and a surge in Facebook’s share price have fueled speculation that a string of technology firms could come to market, including music-sharing service Spotify, lodging […]