Add WETH9 and mirations

packages/contracts/deploy/migrations/migrate.ts

@@ -20,6 +20,7 @@ export const migrator = {
         const tokenTransferProxy = await deployer.deployAndSaveAsync('TokenTransferProxy');
         const zrxToken = await deployer.deployAndSaveAsync('ZRXToken');
         const etherToken = await deployer.deployAndSaveAsync('EtherToken');
+        const makerEtherToken = await deployer.deployAndSaveAsync('WETH9');
         const tokenReg = await deployer.deployAndSaveAsync('TokenRegistry');
 
         const exchangeArgs = [zrxToken.address, tokenTransferProxy.address];
@@ -68,6 +69,18 @@ export const migrator = {
                 gas: addTokenGasEstimate,
             },
         );
+        await tokenReg.addToken.sendTransactionAsync(
+            makerEtherToken.address,
+            'Maker Ether Token',
+            'WETH9',
+            18,
+            constants.NULL_BYTES,
+            constants.NULL_BYTES,
+            {
+                from: owner,
+                gas: addTokenGasEstimate,
+            },
+        );
         for (const token of tokenInfo) {
             const totalSupply = new BigNumber(0);
             const args = [