Added dependency instructions to readme

readme.md

@@ -1,9 +1,18 @@
 # Scraperchan
-A simple program to scrape 4Chan Threads for Images (videos aren't supporter yet)
+A simple program to scrape 4Chan Threads for Images and Videos
 
-usage:
+Install dependencies:
+
+```shell
+git clone https://git.protron.dev/Doc/scraperchan.git
+
+cd scraperchan
+
+pip install -r requirements.txt
+```
+
+Usage:
 
 ```shell
 python scraperchan -u <Thread URL> -o <Local target directory>
-
 ```