[docs] Big Docs Update

README.md

@@ -6,12 +6,21 @@ Screeps Typescript Starter is a starting point for a Screeps AI written in Types
 
 You will need:
 
- - Node.JS (Latest LTS is recommended)
- - A Package Manager (Yarn or NPM)
+ - [Node.JS](https://nodejs.org/en/download) (>= 8.0.0)
+ - A Package Manager ([Yarn](https://yarnpkg.com/en/docs/getting-started) or [npm](https://docs.npmjs.com/getting-started/installing-node))
+ - Rollup CLI (Optional, install via `npm install -g rollup`)
 
 Download the latest source [here](https://github.com/screepers/screeps-typescript-starter/archive/master.zip) and extract it to a folder.
 
-Open the folder in your terminal and run `npm install` (or `yarn`) to install the dependencies.
+Open the folder in your terminal and run your package manager to install install the required packages and TypeScript declaration files:
+
+```bash
+# npm
+npm install
+
+# yarn
+yarn
+```
 
 Fire up your preferred editor with typescript installed and you are good to go!