Update getting started about alpha state

Author: andrewjong

docs/getting_started.md

@@ -1,5 +1,12 @@
 # Getting Started
 
+!!! warning ""
+
+    AirStack is currently in ALPHA and only meant for internal usage. 
+    You will need to have an account with AirLab to access the AirLab Docker registry, Nucleus server, and other resources.
+    The API and functionality are not stable and are subject to change. 
+
+
 By the end of this tutorial, you will have the autonomy stack running on your machine.
 
 ## Requirements
@@ -19,13 +26,9 @@ cd AirStack
 
 ```bash
 ./airstack.sh install  # installs docker and docker-compose
-./airstack.sh setup  # this lets you use the `airstack` command
+./airstack.sh setup  # this lets you use the `airstack` command and sets up your keys
 ```
 
-## Configure
-
-Run `./configure.sh` and follow the instructions in the prompts to do an initial configuration of the repo.
-
 ## Docker Images
 
 Now you have two options on how to proceed. You can build the docker image from scratch or pull the existing image on the airlab docker registry. Building the image from scratch can be useful if you would like to add new dependencies or add new custom functionality. For most users just pulling the existing image will be more conveninent and fast since it doesn't require access to the Nvidia registry.
@@ -49,7 +52,7 @@ The images will be pulled from the server automatically. This might take a while
 
 <details><summary>Option 2: Build Docker Images From Scratch</summary>
 
-1.  Download the Ascent Spirit SITL software package by running this script (pip3 is required):
+1.  Download the Ascent Spirit SITL software package by running this script:
 
     ```
     cd AirStack/