Update README.md (#1088)

* Update README.md
added account center & notify descriptions under features header

Author: techgangboss

README.md

@@ -5,8 +5,10 @@
 - **Minimal Dependencies**: All wallet dependencies are included in separate packages, so you only include the ones you want to use in your app.
 - **Multiple Wallets and Accounts Connection**: Allow your users to connect multiple wallets and multiple accounts within each wallet at the same time to your app.
 - **Multiple Chain Support**: Allow users to switch between chains/networks with ease.
+- **Account Center**: A persistent interface to manage wallet connections and networks, with a minimal version for mobile
+- **Notify**: Real-time transaction notifications for the connected wallet addresses for all transaction states
 - **Wallet Provider Standardization**: All wallet modules expose a provider that is patched to be compliant with the [EIP-1193](https://eips.ethereum.org/EIPS/eip-1193), [EIP-1102](https://eips.ethereum.org/EIPS/eip-1102), [EIP-3085](https://eips.ethereum.org/EIPS/eip-3085) and [EIP-3326](https://ethereum-magicians.org/t/eip-3326-wallet-switchethereumchain/5471) specifications.
-- **Dynamic Imports**: Supporting multiple wallets in your app requires a lot of dependencies. Onboard dynamically imports a wallet and it's dependencies only when the user selects it, so that minimal bandwidth is used.
+- **Dynamic Imports**: Supporting multiple wallets in your app requires a lot of dependencies. Onboard dynamically imports a wallet and its dependencies only when the user selects it, so that minimal bandwidth is used.
 
 ## Quickstart