Feature update readme

.gitignore

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+/node_modules

CHANGELOG.md

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+### 1.0.0 (2023-12-07)
+
+##### Implemented Keyring Controller for Base Chain and Added Support for legacy transactions.
+- Added method to generate keyring
+- Added method to restore a keyring
+- Added method to add a new account to the keyring object
+- Added method to export the private key of an address
+- Added method to sign a transaction
+- Added method to sign a message
+- Added method to sign Typed Data (EIP-712)
+- Added importWallet() to import account using privateKey.
+- Added sign() to sign a message or transaction and get signature along with v,r,s.
+- Added getBalance() to fetch the balance in native currency.
+- Added getFee() method for gas estimation for Legacy transactions.
+- Added support for Legacy transactions.
+- Updated README.md.

README.md

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-# vault-polygon-zkEVM-controller-
-Polygon zkEVM controller for Safle Vault
+# vault-polygon-zkEVM-controller <code><a href="https://www.docker.com/" target="_blank"><img height="50" src="https://zkevm.polygonscan.com/images/logo.svg?v=23.11.4.0"></a></code>
+
+[![npm version](https://badge.fury.io/js/@getsafle%2Fvault-polygon-zkevm-controller.svg)](https://badge.fury.io/js/@getsafle%2Fvault-polygon-zkevm-controller)    <img alt="Static Badge" src="https://img.shields.io/badge/License-MIT-green">   [![Discussions][discussions-badge]][discussions-link]
+ <img alt="Static Badge" src="https://img.shields.io/badge/Polygon zkEVM_controller-documentation-purple">    
+
+A Module written in javascript for managing various keyrings of Polygon-zkEVM accounts, encrypting them, and using them.
+
+- [Installation](#installation)
+- [Initialize the Polygon-zkEVM Controller class](#initialize-the-polygon-zkevm-controller-class)
+- [Methods](#methods)
+  - [Generate Keyring with 1 account and encrypt](#generate-keyring-with-1-account-and-encrypt)
+  - [Restore a keyring with the first account using a mnemonic](#restore-a-keyring-with-the-first-account-using-a-mnemonic)
+  - [Add a new account to the keyring object](#add-a-new-account-to-the-keyring-object)
+  - [Export the private key of an address present in the keyring](#export-the-private-key-of-an-address-present-in-the-keyring)
+  - [Sign a transaction](#sign-a-transaction)
+  - [Sign a message](#sign-a-message)
+  - [Get balance](#get-balance)
+
+## Installation
+```
+npm install --save @getsafle/vault-polygon-zkEVM-controller
+```
+## Initialize the Polygon-zkEVM Controller class
+
+```
+const { KeyringController, getBalance } = require('@getsafle/vault-polygon-zkEVM-controller');
+
+const polygon_zkevmController = new KeyringController({
+  encryptor: {
+    // An optional object for defining encryption schemes:
+    // Defaults to Browser-native SubtleCrypto.
+    encrypt(password, object) {
+      return new Promise('encrypted!');
+    },
+    decrypt(password, encryptedString) {
+      return new Promise({ foo: 'bar' });
+    },
+  },
+});
+```
+
+## Methods
+
+### Generate Keyring with 1 account and encrypt
+
+```
+const keyringState = await polygon_zkevmController.createNewVaultAndKeychain(password);
+```
+
+### Restore a keyring with the first account using a mnemonic
+
+```
+const keyringState = await polygon_zkevmController.createNewVaultAndRestore(password, mnemonic);
+```
+
+### Add a new account to the keyring object
+
+```
+const keyringState = await polygon_zkevmController.addNewAccount(keyringObject);
+```
+
+### Export the private key of an address present in the keyring
+
+```
+const privateKey = await polygon_zkevmController.exportAccount(address);
+```
+
+### Sign a transaction
+
+```
+const signedTx = await polygon_zkevmController.signTransaction(polygon-zkevmTx, privateKey);
+```
+
+### Sign a message
+
+```
+const signedMsg = await polygon_zkevmController.signMessage(msgParams);
+```
+
+### Sign a message
+
+```
+const signedObj = await polygon_zkevmController.sign(msgParams, pvtKey, web3Obj);
+```
+
+### Sign Typed Data (EIP-712)
+
+```
+const signedData = await polygon_zkevmController.signTypedMessage(msgParams);
+```
+
+### Get balance
+
+```
+const balance = await getBalance(address, web3);
+```
+[discussions-badge]: https://img.shields.io/badge/Code_Quality-passing-rgba
+[discussions-link]: https://github.com/getsafle/vault-polygon-zkevm-controller/actions