Move from using lerna multi-package commands to wsrun, update README's accordingly

packages/typescript-typings/README.md

@@ -40,28 +40,16 @@ yarn install
 
 ### Build
 
-If this is your **first** time building this package, you must first build **all** packages within the monorepo. This is because packages that depend on other packages located inside this monorepo are symlinked when run from **within** the monorepo. This allows you to make changes across multiple packages without first publishing dependent packages to NPM. To build all packages, run the following from the monorepo root directory:
+To build this package and all other monorepo packages that it depends on, run the following from the monorepo root directory:
 
 ```bash
-yarn lerna:rebuild
+PKG=@0xproject/typescript-typings yarn build
 ```
 
 Or continuously rebuild on change:
 
 ```bash
-yarn dev
-```
-
-You can also build this specific package by running the following from within its directory:
-
-```bash
-yarn build
-```
-
-or continuously rebuild on change:
-
-```bash
-yarn build:watch
+PKG=@0xproject/typescript-typings yarn watch
 ```
 
 ### Clean

packages/typescript-typings/package.json

@@ -3,6 +3,7 @@
     "version": "0.3.1",
     "description": "0x project typescript type definitions",
     "scripts": {
+        "watch": "tsc -w",
         "build": "tsc && copyfiles -u 1 './lib/**/*' ./scripts",
         "clean": "shx rm -rf scripts",
         "manual:postpublish": "yarn build; node ./scripts/postpublish.js"