add dummy test

contracts/migrations/2_deploy_mimc.js

@@ -0,0 +1,24 @@
+const path = require('path');
+
+const mimcGenContract = require('circomlib/src/mimcsponge_gencontract.js');
+const Artifactor = require('truffle-artifactor');
+
+const SEED = 'mimcsponge';
+
+
+module.exports = function(deployer) {
+  return deployer.then( async () =>  {
+    const contractsDir = path.join(__dirname, '..', 'build/contracts');
+    let artifactor = new Artifactor(contractsDir);
+    let mimcContractName = 'MiMC';
+    await artifactor.save({
+      contractName: mimcContractName,
+      abi: mimcGenContract.abi,
+      unlinked_binary: mimcGenContract.createCode(SEED, 220),
+    })
+    .then(async () => {
+      const MiMC = artifacts.require(mimcContractName);
+      await deployer.deploy(MiMC);
+    });
+  });
+};