Nitpick title based on dense verbiage [1]: 2019-nCov may contain a mutation for efficient spreading 1 - Gain-of-function mutation: A mutation that confers new

Nitpick title based on dense verbiage [1]: 2019-nCov may contain a mutation for efficient spreading 1 - Gain-of-function mutation: A mutation that confers new or enhanced activity on a protein.