Update README.md

Author: alelievr

README.md

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 # NodeGraphProcessor
 Node graph editor framework focused on data processing using Unity UIElements, GraphView and C# 4.7
 
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 [![Codacy Badge](https://api.codacy.com/project/badge/Grade/4c62ece874d14a0b965b92cb163e3146)](https://www.codacy.com/manual/alelievr/NodeGraphProcessor?utm_source=github.com&utm_medium=referral&utm_content=alelievr/NodeGraphProcessor&utm_campaign=Badge_Grade)
 [![openupm](https://img.shields.io/npm/v/com.alelievr.node-graph-processor?label=openupm&registry_uri=https://package.openupm.com)](https://openupm.com/packages/com.alelievr.node-graph-processor/)