message: Update readme to cover text document breakage
diff: @@ -31,6 +31,10 @@ After cloning the repository, run `npm install` to install dependencies and `npm
  ## History
  +## 3.15.2 Protocol, 6.1.x client and 6.1.x server
  +
  +* Proposed support for semantic tokens.
  +
  ## 3.15.0 Protocol, 6.0.0 Client & 6.0.0 Server
  * Progress support for work done and partial result progress.
  @@ -41,7 +45,17 @@ After cloning the repository, run `npm install` to install dependencies and `npm
  * Support for custom text document implementations:
  * new npm package `vscode-languageserver-textdocument` which ships a standard text document implementation with basic incremental update. Server now need to prereq this npm package.
  * deprecated text document implementation in types.
  - * this resulted in a small breakage on the server side. Instead of doing `new TextDocuments` you now have to pass in a text document configuration to provide callbacks to create and uppdate a text document.
  + * this resulted in a small breakage on the server side. Instead of doing `new TextDocuments` you now have to pass in a text document configuration to provide callbacks to create and uppdate a text document. Here are examples in TypeScript and JavaScript
  +```typescript
  +import { TextDocuments } from 'vscode-languageserver';
  +import { TextDocument } from 'vscode-languageserver-textdocument';
  +const documents = new TextDocuments(TextDocument);
  +```
  +```javascript
  +const server = require("vscode-languageserver");
  +const textDocument = require("vscode-languageserver-textdocument");
  +const documents = new server.TextDocuments(textDocument.TextDocument);
  +```
  ### 5.1.1 Client
  