Remove 'wei' units from block gas limit parameter
Remove 'wei' units from block gas limit parameter

As I understand it, the block gas limit, `gasLimit` is in terms of the maximum EVM gas used, as opposed to the amount of Ether spent for each gas unit.    At present, the `-l` /`gasLimit` parameter is noted as being in units of Wei. The suggested minor update removes the units to avoid confusion for new users.  Thanks to the devs and maintainers for this useful project.
ethereumjs/testrpc