Update README.md

Author: Lorie Pisicchio

README.md

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 # streamdata-js
 Streamdata Javascript SDK package containing SDK, documentation and sample applications
+
+The SDK will allow you to use <a href="http://streamdata.io">streamdata.io</a> Proxy to get data from various sources, and use them in your application.
+In this directory, you will find 
+- a minified version of the SDK (streamdataio.min.js)
+- the documentation that will help you understand how it works
+- some sample projects to show you how to use this SDK within a Javascript application, using your favorite JS stack
+  - stockmarket sample shows how to get data from a demo data source returning simulated market data, and bind them to a simple UI using JQuery
+  - stockmarket-angular is another version of stockmarket projet using AngularJS
+  - twitter show how to use Twitter API, and pass a specific OAuth header to streamdata.io proxy
+ 
+For both sample, after cloning the git repository, you can run 
+- ```npm install```
+- ```bower install```
+- ```gulp serve```
+
+to run the sample, and browse the code to understand how it works.
+
+If you have any question of feedback, feel free to ask : <a href="mailto://[email protected]">[email protected]</a>
+
+Enjoy !