App Description:

City-Validation-S3 reads all provided files within the data package
A CitiesMap is created and stored in the client with the cities located inside cites.json
Tmp cities located here, are compared and validated against the map
Files for valid elements, invalid elements and unprocessable files are then generated inside of the results package
This app can be run using either go run or a docker container.
Due to time constraints, there is only partial testing of some of the functions

App Directions:

Install Go
- For Linux:
  - Run sudo apt-get update sudo apt-get install golang
- For Mac (Homebrew)
  - Run brew install go
From the CITY_VALIDATION_s3 directory, run go mod tidy to install external dependencies
From the root of the directory run go run city_validation_s3.go
Check the results package for the generated files