Initialize README with project details and setup

Added project description and getting started instructions.

Author: amjiao

README.md

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+# Score
+<p align="center"><img width="148" height="148" alt="score_icon" src="https://github.com/user-attachments/assets/77b0cd4d-3a4a-440d-9f2e-c71fd202bafb" /><p align="center">
+
+Score is Cornell’s all-in-one sports discovery hub that makes Cornell sports easily accessible and engaging for the entire community. A free and open-source app, Score helps facilitate the seamless discovery, tracking, and engagement of Cornell sports, allowing students to conveniently stay informed on sports games and feel motivated to actively participate in the campus sports culture.
+
+
+## Getting Started
+1. Clone the repository
+2. Download the following two files (AppDev members can find it pinned in `#score-android` in the Slack)
+    - `score-keystore`
+    - `google-services.json`
+4. Add those two files to the project root in Android Studio
+5. Build and run!