Approve Tokens

Example for ERC20

eth-cli approveERC20 -a 1000 \
    -f /tmp/a.json \
    --token  0x7a33ECCA359469AaDDd225cbFAAB5FCe4e429126 \
    --to 0x0000000000000000000000000000000000000001

Example for ERC721

./eth-cli approveERC721 --id 2 \
    -f /tmp/a.json \
    --token 0x122895Fc43505D4d724037709f60f87f99d80Bfd \
    --to 0x0000000000000000000000000000000000000001