Addressing issue #24

Added more information on how to use the generator and prerequisites

Author: fspv

README.md

@@ -18,11 +18,23 @@ I personally use it to track my grinding progress.
 ![photo_2021-09-29_08-58-21 jpg 2](https://user-images.githubusercontent.com/1616237/135676123-106871e0-bc8e-4d23-acef-c27ebe034ecf.png)
 ![photo_2021-09-29_08-58-23 jpg 2](https://user-images.githubusercontent.com/1616237/135676125-90067ea3-e111-49da-ae13-7bce81040c37.png)
 
+## Prerequisites
+1. [python3.8+](https://www.python.org/downloads/) installed
+2. [python virtualenv](https://pypi.org/project/virtualenv/) installed
+3. [git cli](https://github.com/git-guides/install-git) installed
+4. [GNU make](https://www.gnu.org/software/make/) installed (optional, can run the script directly)
+5. \*nix operating system (Linux, MacOS, FreeBSD, ...). Should also work for Windows, but commands will be different. I'm not a Windows expert, so can't figure out how to make it work there, but contributions are welcome.
+
+## How to run
+First download the source code
+```
+git clone https://github.com/prius/leetcode-anki.git
+cd leetcode-anki
+```
 
-## Installation
-First initialize and activate python virtualenv somewhere
+After that initialize and activate python virtualenv somewhere
 ```
-virtualenv -p python3 leetcode-anki
+virtualenv -p python leetcode-anki
 . leetcode-anki/bin/activate
 ```
 
@@ -31,7 +43,7 @@ Then initialize session id variable. You can get it directly from your browser (
 export LEETCODE_SESSION_ID="yyy"
 ```
 
-And then run
+And finally run
 ```
 make generate
 ```