Updated README

README.md

@@ -1,5 +1,14 @@
 ## Analysis of ORCID migration data for MIPT
 
+Idea from the article in [Science:"Vast set of public CVs reveals the world’s most migratory
+scientists"](http://www.sciencemag.org/news/2017/05/vast-set-public-cvs-reveals-world-s-most-migratory-scientists)
 
+# based on data that comes from "Introducing ORCID"
 
-# based on data that comes together with 
+Original data from https://doi.org/10.5061/dryad.48s16
+
+# Prerequisites
+
+* Required R packages: 
+ * for flat graphs: `tidyverse`  
+ * for world map view: `c('maptools','mapproj','rgeos','rgdal','jsonlite','RCurl','RColorBrewer')`