README added mission (#1972)

* Docs correct typos

* Added mission statement and youtube intro - for some users the Readme will be first contact with celo

README.md

@@ -9,6 +9,19 @@ and other packages.
 
 The source code for the Celo Blockchain which operates a node on the Celo Network is kept in a separate repo [here](https://github.com/celo-org/celo-blockchain).
 
+### Celo's Mission - Prosperity for All
+Celo, pronounced /ˈtselo/, means ‘purpose’ in Esperanto. In a similar spirit, we are aiming to create a new platform to connect people globally and bring financial stability to those who need it most. We believe blockchain technology is one of the most exciting innovations in recent history and as a community we look to push the boundaries of what is possible with it today. More importantly, we are driven by purpose -- to solve real-world problems such as lack of access to sound currency, or friction for cash-transfer programs aimed to alleviate poverty. Our mission is to build a monetary system that creates the conditions for prosperity for all.
+
+<!-- image with YouTube link -->
+<p align="center">
+  <a href="http://www.youtube.com/watch?v=kKggE5OvyhE">
+    <img src="https://i.imgur.com/GHF5U9B.jpg" alt="Play on Youtube - What if money were beautiful" title="Play on Youtube - What if money were beautiful" width="800" style="border:none;"/>
+  </a>
+  <br />
+  <i>What if money were beautiful?</i>
+</p>
+
+
 ### The Celo Stack
 
 Celo is oriented around providing the simplest possible experience for end users, who may have no familiarity with cryptocurrencies, and may be using low cost devices with limited connectivity. To achieve this, the project takes a full-stack approach, where each layer of the stack is designed with the end user in mind whilst considering other stakeholders \(e.g. operators of nodes in the network\) involved in enabling the end user experience.