Update README.md (#94)

# PR Summary
PR Link: INSERT-LINK-HERE

Issue Link: INSERT-LINK-HERE

### Description
Add a single line summary describing the purpose of this PR.

### Reviewers
Tag reviewers.

- Required:
  
- Optional:

---
### Changelog
- Add a bulleted list of major changes

### Reviewer Guide
This is the most important part!
- No one is going to read every line of every PR, so you need to tell
the reviewers what they are looking for.
- Point out lines you want feedback on or feel unsure about.
- Highlight major changes that other members need to know about.

### Testing
#### Automatic
- Describe test cases that are covered by unit tests
#### Manual
- Describe any manual testing (launch files, visualizations, etc.)

### Documentation
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### Checklist
- [ ] Confirmed all tests pass on a clean build
- [ ] Added reviewers in Github
- [ ] Posted PR Summary to Discord PR's Channel
- [ ] Ran uncrustify on any modified C++ files
- [ ] Ran Colcon Lint for any modified CMakeLists.txt or Package.xml

README.md

@@ -34,6 +34,12 @@ echo "export VEXU_HOME=\"/home/$(whoami)/VEXU_GHOST\"" >> ~/.bashrc
 echo 'source "$VEXU_HOME/scripts/setup_env.sh"' >> ~/.bashrc
 ```
 Close this terminal, and open a new one to load new settings.
+#### Go to the VEXU_GHOST directory (every time you open a new terminal)
+
+```
+cd ~/VEXU_GHOST
+```
+
 #### Update Dependencies
 ```sh
 ./scripts/update_dependencies.sh