Renaming confusing command line option to match RPC and describing key_create better.
Renaming confusing command line option to match RPC and describing key_create better.

SergiySW/raiblocks,SergiySW/raiblocks,clemahieu/raiblocks,clemahieu/raiblocks,clemahieu/raiblocks,drizzt/raiblockscommunity,SergiySW/raiblocks,clemahieu/raiblocks,drizzt/raiblockscommunity,SergiySW/raiblocks,SergiySW/raiblocks,drizzt/raiblockscommunity,clemahieu/raiblocks,drizzt/raiblockscommunity,drizzt/raiblockscommunity,clemahieu/raiblocks