message: [cli] Make gas args of transfer command specify units
  It's confusing since we specify gas in microlibras but transfers in libras.  Add commenting to make this explicit
diff: @@ -13,11 +13,11 @@ impl Command for TransferCommand {
  fn get_params_help(&self) -> &'static str {
  "\n\t<sender_account_address>|<sender_account_ref_id> \
  <receiver_account_address>|<receiver_account_ref_id> <number_of_coins> \
  - [gas_unit_price (default=0)] [max_gas_amount (default 10000)] \
  + [gas_unit_price_in_micro_libras (default=0)] [max_gas_amount_in_micro_libras (default 10000)] \
  Suffix 'b' is for blocking. "
  }
  fn get_description(&self) -> &'static str {
  - "Transfer coins from account to another."
  + "Transfer coins (in libra) from account to another."
  }
  fn execute(&self, client: &mut ClientProxy, params: &[&str]) {
  if params.len() < 4 || params.len() > 6 {
  