Fix README internal link

Author: benloh

README.md

@@ -4,7 +4,7 @@ NetCreate 2018 is a network graph analysis tool for researching reading comprehe
 
 
 
-**This is a work in progress. Please see [Developer 2.0 Work in Progress Branch](#developer-2-0-work-in-progress-branch) at the bottom for current notes.**
+**This is a work in progress. Please see [Developer 2.0 Work in Progress Branch](#developer-20-work-in-progress-branch) at the bottom for current notes.**
 
 
 
@@ -167,4 +167,4 @@ MAJOR SYSTEM FEATURE REQUESTS
 * suggest accessible colors/colorblind friendly
 * network visual collapse based on filtering
 * collapsible subnetworks
-* easy-to-understand visual theming system for UI elements
+* easy-to-understand visual theming system for UI elements