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

packages/contracts/README.md

@@ -34,28 +34,16 @@ 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=contracts 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=contracts yarn watch
 ```
 
 ### Clean

packages/contracts/package.json

@@ -8,7 +8,7 @@
         "test": "test"
     },
     "scripts": {
-        "build:watch": "tsc -w",
+        "watch": "tsc -w",
         "prebuild": "run-s clean copy_artifacts generate_contract_wrappers",
         "copy_artifacts": "copyfiles -u 4 '../migrations/artifacts/1.0.0/**/*' ./lib/src/artifacts;",
         "build": "tsc",