Update README.md

Updated tutorial to inform Windows users of GitBash to use -verbose command. The installation process feels like its hung up because it doesn't show installation progress. Using this command allows us to identify any trival matters.
 **Note**: If prompted for an SSL key and certificate, follow the instructions below.

Author: chunt007

README.md

@@ -28,12 +28,15 @@ You can install and run the server either using Node.js directly or using
 first approach, for the second approach see the section [use Docker](#use-docker)
 Section below.
 
+**Note**: If using GitBash, it is helpful to use the -verbose flag to see the progress of the install.
+
 To install, first install [Node](https://nodejs.org/en/) and then run the following
 
 ```bash
 $ npm install -g solid-server
 ```
 
+
 ### Run a single-user server (beginner)
 
 The easiest way to setup `solid-server` is by running the wizard. This will create a `config.json` in your current folder