Update README.md

Author: seveibar

README.md

@@ -4,11 +4,14 @@ Interface for doing NLP tasks. [Check it out here](https://universaldatatool.git
 
 - Audio transcription
 - Text Labeling (Entity, Classification)
+- Entity Relation Labeling
 
-![screenshot 1](https://user-images.githubusercontent.com/1910070/76181412-560efc00-6197-11ea-8eba-1f48768f5183.png)
+![screenshot 1](https://user-images.githubusercontent.com/1910070/91113515-c5987b00-e653-11ea-92b8-08fa60cf7619.png)
 
 ![screenshot 2](https://user-images.githubusercontent.com/1910070/76181462-8d7da880-6197-11ea-908f-96d988a7efc8.png)
 
+![screenshot 3](https://user-images.githubusercontent.com/1910070/76181412-560efc00-6197-11ea-8eba-1f48768f5183.png)
+
 ## Installation
 
 `npm install @material-ui/core chroma-js spelling react-nlp-annotate`