By Rob Lenihan Billionaire bitcoin evangelist Michael Saylor shows his HODling skills as he buys even more of the most popular cryptocurrency. As long Michael Saylor is around, bitcoin will never walk alone. The billionaire co-founder and CEO of MicroStrategy, and four-alarm bitcoin evangelist has taken the concept of HODL — sometimes known as “hold on for dear life” — to the stratosphere. Bitcoin Under PressureThis is a challenging time for digital currencies. Edward Moya, senior market analyst for the Americas with Oanda, noted that “the news cycle has been pretty awful for crypto markets….