adding truffle file back (#194)

Author: aalavandhan

truffle.js

@@ -0,0 +1,15 @@
+// NOTE: this file is required by our internal deployment script uFragments-eth-integration
+// which still works with truffle
+// This can be removed once we completely transition to the new hardhat workflow
+module.exports = {
+  compilers: {
+    solc: {
+      version: '0.4.24',
+      settings: {
+        optimizer: {
+          enabled: false
+        }
+      }
+    }
+  }
+};