Install using pip without cloning explicitly

Closes #205 (closed)

docs/get_started/index.md

 # Get started
 
-To use DAN in your own environment, you need to first clone via:
+## Installation
+
+To use DAN in your own environment, you need to install it as a dependency or manually.
+
+### As a dependency
+
+To install DAN as a dependency, you need to first add the following line to your `requirements.txt` file:
+
+```shell
+teklia-dan @ git+ssh://git@gitlab.teklia.com/atr/dan.git
+```
+
+Then you can install it via pip:
+
+```shell
+pip install -r requirements.txt
+```
+
+### Manually
+
+To install DAN manually, you need to first clone via:
 
 ```shell
 git clone git@gitlab.teklia.com:atr/dan.git
@@ -12,6 +32,8 @@ Then you can install it via pip:
 pip install -e .
 ```
 
+---
+
 To learn more about the newly installed `teklia-dan` command, make sure to run:
 
 ```shell