Update Getting Started DocC Documentation for the Firebase Emulator (#…

…313)

* Update README.md
* Update getting-started.tutorial

Co-authored-by: Mikaela Caron <mikaelacaron@gmail.com>

Basic-Car-Maintenance/Documentation.docc/getting-started.tutorial

@@ -88,8 +88,53 @@
             }
         }
     }
-
-    @Section(title: "Starting on an issue") {
+
+    @Section(title: "Setting Up Firebase Local Emulator") {
+        @ContentAndMedia {
+            Follow these steps to set up the Firebase Local Emulator to load data locally and not affect production. Please do not skip this step.
+        }
+
+        @Steps {
+            @Step {
+                Install Homebrew, a package manager for macOS, if you haven't already:
+
+                `/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"`
+            }
+            @Step {
+                Install Xcode command line tools:
+
+                `xcode-select --install`
+            }
+            @Step {
+                Install Node Version Manager (NVM). You then don't need to update the system node version.
+
+                `brew install nvm`
+            }
+            @Step {
+                Add the executable to the `$PATH` via `.zshrc` or `.bashrc` file as prompted after installation. Do NOT forget this! (and then restart your Terminal)
+            }
+            @Step {
+                Download and use the latest stable version of Node.js:
+
+                `nvm install stable` 
+            }
+            @Step {
+                `nvm use stable`
+            }
+            @Step {
+                Install OpenJDK, and add the executable to the `$PATH` via `.zshrc` or `.bashrc` file as prompted after installation. Do NOT forget this! (and then restart your Terminal)
+
+                `brew install openjdk` 
+            }
+            @Step {
+                Install Firebase Tools for running the emulator.
+
+                `npm install -g firebase-tools`
+            }
+        }
+    }
+
+    @Section(title: "Start Working on an Issue") {
         @ContentAndMedia {
             **BEFORE** starting on an issue, comment on the issue you want to work on.
 
@@ -106,6 +151,24 @@
 
                 @Image(source: 8-checkout.png, alt: "Checkout issue locally")
             }
+            @Step {
+                Anytime you run the project, first in Terminal `cd` to `backend` in the Basic-Car-Maintenance directory. This is the directory with the `firebase.json` file, you should see that if you type `ls`
+
+                `cd backend`
+            }
+            @Step {
+                Start the Firebase Emulator. Which will start the emulators, and keep your data in local-data directory. Meaning when you start and stop the emulator your data will persist.
+
+                `firebase emulators:start --import=./local-data --export-on-exit`
+            }
+            @Step {
+                Run the app. You should see your anonymous user in Authentication, and once you add new data, see it in Firestore emulator UI at: http://127.0.0.1:4000/firestore
+
+                If you don't see your user, delete the app from the simulator, and in the menu go to Device > Erase All Content and Settings (which resets your simulator), and try to run again
+            }
+            @Step {
+                When your feature or fix is complete, open a pull request (PR) from your feature branch to the `dev` branch. Make sure to use a descriptive PR title and fill out the entire PR template without deleting any sections.
+            }
         }
     }
 }