networks: {
    <yourNetworkName>: {
      host: "127.0.0.1",
      port: 8545,
      network_id: "*", // i.e. run on any network your geth node is connected to
      //from: "0x<your address>", // if you want to deploy from a specific node address, otherwise it'll default to eth.accounts[0]
      gas: 4712388,  //default 4712388
      gasPrice: 100000000000  // default 100000000000(100 Shannon)
    }