Update README.md

Author: sonjageorgievska

README.md

@@ -44,7 +44,9 @@ If you would like to use Google Chrome or any other browser, you would have to
 * Centralize  : will move data back to center of the screen
 * Point size attenuation: very useful when the user has zoomed-in enough. When this option is not selected, the points do not get bigger as the camera moves closer to them, so that they can be separated and inspected individually. 
 * Show point info in popup : when de-selected, the information about a point whne hovering over it will be displayet at the top left corner of the screen rather than in a pop-up message
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 ### Coloring by intensity of property###
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 As explained in section "Data description and functionality" .
 
 ## Data format ##