README.md updated for international texts file

local-workshop-sources/README.md

-# Sources
+## Background mindmaps for various languages
+* Logo's and titles of goals: United Nations
+* Intro text per goal: United Nations
+* Full text of targets: official translations of United Nations 2015: Transforming our World;
+The 2030 Agenda for Sustainable Development
+* Target codes have been converted to lowercase (4.A -> 4.a)
+* Mindmaps produced with Corel/Mindmanager
+* Mindmaps published as HTML5 interactive map to Mindmanager cloud
+* Mindmaps exported to spreadsheet "International List of SDGs and Targets" for easy cross reference
+
+## International texts
+* Workbook of spreadsheets for easy text production in different languages
+* Codes for different languages are identical
+* Code 0 added for missing code
+* Goal codes have suffix ".0"
+* Subtitles for Goal 17 have been removed
 
 ## File types used for sources
 * *.doc, +.docx  = Microsoft Word 2010