Update README to use truffle unbox command

Author: gnidan

README.md

@@ -10,28 +10,23 @@ All truffle boxes come with Truffle, Webpack and React. This box adds react-rout
  npm install -g ethereumjs-testrpc
  ```
 
-2. Clone or download the truffle box of your choice.
+2. Download box.
  ```javascript
- git clone [repo]
+ truffle unbox truffle-box-auth
  ```
 
-3. Install the node dependencies.
- ```javascript
- npm install
- ```
-
-4. Compile and migrate the contracts.
+3. Compile and migrate the contracts.
  ```javascript
  truffle compile
  truffle migrate
  ```
 
-5. Run the webpack server for front-end hot reloading. For now, smart contract changes must be manually recompiled and migrated.
+4. Run the webpack server for front-end hot reloading. For now, smart contract changes must be manually recompiled and migrated.
  ```javascript
  npm run start
  ```
 
-6. Jest is included for testing React components and Truffle's own suite is incldued for smart contracts. Be sure you've compile your contracts before running jest, or you'll receive some file not found errors.
+5. Jest is included for testing React components and Truffle's own suite is incldued for smart contracts. Be sure you've compile your contracts before running jest, or you'll receive some file not found errors.
  ```javascript
  // Runs Jest for component tests.
  npm run test
@@ -40,7 +35,7 @@ All truffle boxes come with Truffle, Webpack and React. This box adds react-rout
  truffle test
  ```
 
-7. To build the application for production, use the build command. A production build will be in the build_webpack folder.
+6. To build the application for production, use the build command. A production build will be in the build_webpack folder.
  ```javascript
  npm run build
  ```