Update README.md (#364)

* Update README.md

updated fonts to look less silly :).

* Update README.md

Added an introduction and suchforth

README.md

-Steemit
+# Steemit.com
+Steemit.com is the react.js web interface to the world's first and best blockchain-based social media platform.  It uses [STEEM](https://github.com/steemit/steem), a blockchain powered by Graphene 2.0 technology to store JSON-based content for a plethora of web applications.   
 ========
 
+## Why would I want to use Steemit.com?
+* Learning how to build blockchain-based web applications using STEEM as a content storage mechanism in react.js
+* Reviewing the inner workings of the steemit.com social media platform
+* Assisting with software development for steemit.com
+
 ## Installation
 
-# Clone the repository and make the tmp folder
+#### Clone the repository and make a tmp folder
 ```bash
 git clone https://github.com/steemit/steemit.com
 cd steemit.com