fix(docs): add nvm install info in Readme.md in manual setup section. (#694)

Author: KrishPatel13

README.md

@@ -85,6 +85,7 @@ Prerequisite:
 - Python 3.10
 - Git
 - Tesseract (for OCR)
+- nvm (node version manager)
 
 For the setup of any/all of the above dependencies, follow the steps [SETUP.md](./SETUP.md).
 

SETUP.md

@@ -54,3 +54,12 @@
 
 #### macOS, Ubuntu and Other Operating System:
 - Follow the OS Specific installation here: https://tesseract-ocr.github.io/tessdoc/Installation.html
+
+
+## nvm (Node Version Manager)
+
+#### Windows:
+- Follow this guide: https://www.xda-developers.com/how-install-nvm-windows/
+
+#### macOS, Ubuntu and Other Operating System:
+- Follow the OS Specific installation here: https://collabnix.com/how-to-install-and-configure-nvm-on-mac-os/