message: Update testnetv3 detail in README
diff: @@ -168,15 +168,15 @@ The flow for asset transfers on the Matic Network is as follows:
  **Matic Testnet**
  -- RPC endpoint host: https://testnet2.matic.network
  -- TEST childchain ERC20 token: 0xcc5de81d1af53dcb5d707b6b33a50f4ee46d983e
  +- RPC endpoint host: https://testnetv3.matic.network
  +- TEST childchain ERC20 token: 0x9a93c912F4eFf0254d178a18ACD980C1B05b57b0
  **Ropsten testnet addresses**
  -- TEST mainchain ERC20 token: 0x6b0b0e265321e788af11b6f1235012ae7b5a6808
  -- Root Contract: 0x60e2b19b9a87a3f37827f2c8c8306be718a5f9b4
  -- DepositManager Contract: 0x4072fab2a132bf98207cbfcd2c341adb904a67e9
  -- WithdrawManager Contract: 0x4ef2b60cdd4611fa0bc815792acc14de4c158d22
  +- TEST mainchain ERC20 token: 0x28C8713DDe7F063Fdc4cA01aB2A8856e0F243Fec
  +- Root Contract: 0x82a72315E16cE224f28E1F1fB97856d3bF83f010
  +- DepositManager Contract: 0x3Bc6701cA1C32BBaC8D1ffA2294EE3444Ad93989
  +- WithdrawManager Contract: 0x3cf9aD3395028a42EAfc949e2EC4588396b8A7D4
  ### Faucet
  @@ -222,7 +222,7 @@ matic.initialize()
  - `options` is simple Javascript `object` which can have following fields:
  - `maticProvider` can be `string` or `Web3.providers` instance. This provider must connect to Matic chain. Value can be anyone of following:
  - - `'https://testnet2.matic.network'`
  + - `'https://testnetv3.matic.network'`
  - `new Web3.providers.HttpProvider('http://localhost:8545')`
  - [WalletConnect Provider instance](https://github.com/WalletConnect/walletconnect-monorepo#for-web3-provider-web3js)
  - `parentProvider` can be `string` or `Web3.providers` instance. This provider must connect to Ethereum chain (testnet or mainchain). Value can be anyone of following:
  