Firebase Documentation (#168)

Co-authored-by: Kaleb <[email protected]>

docs/project-2/Device Design/Firebase.md

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+# Firebase overview 
+For our project we are using Firebase for the data storage, currently we are using a Realtime database which will have to be replaced moving forward.
+I have provided a video link that contains just the basic info on our databse such as the the login id and passwords to use firebase.
+https://youtu.be/vET7iuKpOCc