Merge pull request #505 from 0xProject/fix/readmeContributingSection

Improve README contributing sections in all packages

packages/react-shared/README.md

@@ -18,11 +18,11 @@ If your project is in [TypeScript](https://www.typescriptlang.org/), add the fol
 
 ## 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.
+We welcome improvements and fixes from the wider community! To report bugs within this package, please create an issue in this repository.
 
 Please read our [contribution guidelines](../../CONTRIBUTING.md) before getting started.
 
-### Install Dependencies
+### Install dependencies
 
 If you don't have yarn workspaces enabled (Yarn < v1.0) - enable them:
 
@@ -38,18 +38,38 @@ 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:
+
+```bash
+yarn lerna:rebuild
+```
+
+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
+```
+
+### Clean
+
+```bash
+yarn clean
+```
+
 ### Lint
 
 ```bash
 yarn lint
 ```
-
-### Run Tests
-
-```bash
-yarn test
-```