Update docs

test/helpers/enums.js

@@ -0,0 +1,11 @@
+function Enum(...options) {
+  return Object.fromEntries(options.map((key, i) => [key, web3.utils.toBN(i)]));
+}
+
+module.exports = {
+  Enum,
+  ProposalState: Enum('Pending', 'Active', 'Canceled', 'Defeated', 'Succeeded', 'Queued', 'Expired', 'Executed'),
+  VoteType: Enum('Against', 'For', 'Abstain'),
+  Rounding: Enum('Floor', 'Ceil', 'Trunc', 'Expand'),
+  OperationState: Enum('Unset', 'Waiting', 'Ready', 'Done'),
+};