Merge branch 'development' into feature/website/wallet-wrap

* development: (35 commits)
  Fix CHANGELOG
  Update Yarn.lock
  Standardize changelog dates and format
  Fix stubbing of a non-existent property
  Remove redundant cast
  Move common types out of web3 types
  Add monorepo_scripts to npmignore
  Add typeRoots
  Add clean-state tests
  Remove nested .gitignore files since `yarn publish` gets confused by them and ignores their contents on the top-level scope
  Remove WETH hack now that updated WETH address is in TokenRegistry
  Revert TokenRegistry address on Kovan
  Improve rounding error message
  Portal fill with mixed decimals
  Add error popover if TokenRegistry on network user is browsing on don't include the requisite default tokens for 0x Portal to function
  Set timeout for compiler tests
  Remove redundant types
  Add missing param comments
  Fix a comment
  Add a comment
  ...

1 files changed, 10 insertions, 2 deletions

diff --git a/packages/json-schemas/README.md b/packages/json-schemas/README.md
index f320196e9..980d17416 100644
--- a/packages/json-schemas/README.md
+++ b/packages/json-schemas/README.md
@@ -12,8 +12,8 @@ yarn add @0xproject/json-schemas
 
 **Import**
 
-```javascript
-import { schemas } from '@0xproject/json-schemas';
+```typescript
+import { SchemaValidator, ValidatorResult, schemas } from '@0xproject/json-schemas';
 ```
 
 or
@@ -22,6 +22,14 @@ or
 var schemas = require('@0xproject/json-schemas').schemas;
 ```
 
+If your project is in [TypeScript](https://www.typescriptlang.org/), add the following to your `tsconfig.json`:
+
+```json
+"compilerOptions": {
+    "typeRoots": ["node_modules/@0xproject/typescript-typings/types", "node_modules/@types"],
+}
+```
+
 ## Contributing
 
 We strongly encourage that the community help us make improvements and determine the future direction of the protocol. To report bugs within this package, please create an issue in this repository.