Update ledger docs for new init options (#1457)

Author: Adamj1232

packages/demo/package.json

@@ -33,7 +33,7 @@
     "@web3-onboard/injected-wallets": "^2.5.0",
     "@web3-onboard/keepkey": "^2.3.2",
     "@web3-onboard/keystone": "^2.3.2",
-    "@web3-onboard/ledger": "^2.4.0",
+    "@web3-onboard/ledger": "^2.4.1-alpha.1",
     "@web3-onboard/magic": "^2.1.3",
     "@web3-onboard/phantom": "^2.0.0-alpha.1",
     "@web3-onboard/portis": "^2.1.3",

packages/ledger/README.md

@@ -4,45 +4,16 @@
 
 ### Install
 
-`npm i @web3-onboard/ledger`
+`npm i @web3-onboard/core @web3-onboard/ledger`
 
 ### Options
 
 ```typescript
-type LedgerOptions = {
-  customNetwork?: CustomNetwork
-}
-
-interface CustomNetwork {
-  networkId: number
-  genesis: GenesisBlock
-  hardforks: Hardfork[]
-  bootstrapNodes: BootstrapNode[]
-}
-
-interface GenesisBlock {
-  hash: string
-  timestamp: string | null
-  gasLimit: number
-  difficulty: number
-  nonce: string
-  extraData: string
-  stateRoot: string
-}
-
-interface Hardfork {
-  name: string
-  block: number | null
-}
-
-interface BootstrapNode {
-  ip: string
-  port: number | string
-  network?: string
+interface LedgerOptions {
   chainId?: number
-  id: string
-  location: string
-  comment: string
+  bridge?: string
+  infuraId?: string
+  rpc?: { [chainId: number]: string }
 }
 ```
 
@@ -74,7 +45,7 @@ You may decide that on certain platforms you do not want to display this wallet
 import Onboard from '@web3-onboard/core'
 import ledgerModule from '@web3-onboard/ledger'
 
-const ledger = ledgerModule({ filter: ['Safari'] })
+const ledger = ledgerModule()
 
 const onboard = Onboard({
   // ... other Onboard options

packages/ledger/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@web3-onboard/ledger",
-  "version": "2.4.0",
+  "version": "2.4.1-alpha.1",
   "description": "Ledger hardare wallet module for connecting to Web3-Onboard. Web3-Onboard makes it simple to connect Ethereum hardware and software wallets to your dapp. Features standardised spec compliant web3 providers for all supported wallets, framework agnostic modern javascript UI with code splitting, CSS customization, multi-chain and multi-account support, reactive wallet state subscriptions and real-time transaction state change notifications.",
   "keywords": [
     "Ethereum",