Added link for explanation and setup

README.md

-# README
+# Explanation
 
-This README would normally document whatever steps are necessary to get the
-application up and running.
+```bash
+git clone https://gitlab.discs.ateneo.edu/mis-21/to_do.git todo
+```
 
-Things you may want to cover:
-
-* Ruby version
-
-* System dependencies
-
-* Configuration
-
-* Database creation
-
-* Database initialization
-
-* How to run the test suite
-
-* Services (job queues, cache servers, search engines, etc.)
-
-* Deployment instructions
-
-* ...
+(Link)[https://docs.google.com/document/d/1BI8IvJ2Zro7CU8bfJNyNzcLRnNR2tIiwEZ2BrFETbSc/edit?usp=sharing]
\ No newline at end of file