Update README.md

Author: SaNuelson

README.md

@@ -3,15 +3,23 @@ Data Chart Renderer
 
 **DCR** is a JavaScript plugin used to parse CSV datasets, recognize its metadata and select (and render) the most appropriate and useful chart representations using the charting library [Chart.js](https://www.chartjs.org/).
 
-#### User Guide
+#### Quick Reference
 
 DCR is already implemented in 2 ways:
  - [DCR stand-alone web-page](https://github.com/SaNuelson/DataChartRenderer/tree/master/web/auto-page)
  - [DCR Chrome extension](https://github.com/SaNuelson/DataChartRenderer/tree/master/extension)
 
+### File Structure
+
+.
+|
++- extension - contains files required to build DCR Chrome extension
++- src - contains internal module system which is the core of DCR (used in both modes)
++- web - contains a web-page related files which enable to run stand-alone web-page (which is deployed in Environments)
+
 #### Thesis-regarded note
 
 It is possible the DCR plug-in will be in further development after the submission of the thesis.
 
 Due to this reason, a tag "thesis" has been created as well as appropriate release containing a zipped extension/ folder
-to gain easy access to the state of the repository at the time of submitting my bachelor thesis.
+to gain easy access to the state of the repository at the time of submitting my bachelor thesis.