message: improve readme info about web3 v2 target
diff: @@ -44,14 +44,14 @@ You will also need to install a desired target for example `typechain-target-eth
  | [`typechain-target-ethers`](/packages/typechain-target-ethers) | [![npm](https://img.shields.io/npm/v/typechain-target-ethers.svg)](https://www.npmjs.com/package/typechain-target-ethers) | Ethers support |
  | [`typechain-target-truffle`](/packages/typechain-target-truffle) | [![npm](https://img.shields.io/npm/v/typechain-target-truffle.svg)](https://www.npmjs.com/package/typechain-target-truffle) | Truffle support |
  | [`typechain-target-web3-v1`](/packages/typechain-target-web3-v1) | [![npm](https://img.shields.io/npm/v/typechain-target-web3-v1.svg)](https://www.npmjs.com/package/typechain-target-web3-v1) | Web3 version 1.x.x support |
  -| [`typechain-target-web3-v1`](/packages/typechain-target-web3-v2) | [![npm](https://img.shields.io/npm/v/typechain-target-web3-v2.svg)](https://www.npmjs.com/package/typechain-target-web3-v2) | Web3 version 2.x.x support |
  +| [`typechain-target-web3-v2`](/packages/typechain-target-web3-v2) | [![npm](https://img.shields.io/npm/v/typechain-target-web3-v2.svg)](https://www.npmjs.com/package/typechain-target-web3-v2) | Web3 version 2.x.x support |
  ## Usage
  ### CLI
  ```
  -typechain --target=(ethers|truffle|web3-v1|path-to-custom-target) [glob]
  +typechain --target=(ethers|truffle|web3-v1|web3-v2|path-to-custom-target) [glob]
  ```
  - `glob` - pattern that will be used to find ABIs, remember about adding quotes: `typechain "**/*.json"`
  @@ -113,7 +113,11 @@ Now you can simply use your contracts as you did before and get full type safety
  ### Web3-1.0.0
  -Generates typings for contracts compatible with latest Web3.js version. Typings for library itself are now part of `Web3 1.0.0` library so nothing additional is needed. For now it needs explicit cast as shown [here](https://github.com/krzkaczor/TypeChain/pull/88/files#diff-540a9b8840419be93ddb8d4b53325637R8), this will be fixed after improving official typings.
  +Generates typings for contracts compatible with latest stable Web3.js version. Typings for library itself are now part of `Web3 1.0.0` library so nothing additional is needed. For now it needs explicit cast as shown [here](https://github.com/krzkaczor/TypeChain/pull/88/files#diff-540a9b8840419be93ddb8d4b53325637R8), this will be fixed after improving official typings.
  +
  +### Web3-2.0.0
  +
  +Generates typings for contracts compatible with (unstable) Web3.js 2.x.x version. Typings for library itself are now part of `Web3 2.0.0` library so nothing additional is needed. [Usage example](https://github.com/ethereum-ts/TypeChain/blob/master/test/integration/targets/web3-v2/DumbContract.spec.web3.ts#L12).
  ### Your own target
  