This module implements two RESTful API endpoints to consume payloads passed in YAML format.

• the user passes the payload (as YAML) one at a time.

• If the key(s) exist, and value(s) match, then return the matched payloads in memory
• If no match, then return all payloads in memory

The test cases are in metadata_test.go.
Execute: go test [-v]

• TEST postMetadata:
  -- Input valid data
  curl http://localhost:8080/metadata -X POST -H 'Content-Type:application/yaml' --data-binary @valid-1.yml
  curl http://localhost:8080/metadata -X POST -H 'Content-Type:application/yaml' --data-binary @valid-2.yml

-- Input invalid data: curl http://localhost:8080/metadata -X POST -H 'Content-Type:application/yaml' --data-binary @invalid-1.yml
curl http://localhost:8080/metadata -X POST -H 'Content-Type:application/yaml' --data-binary @invalid-2.yml

• TEST getMetadata:
  -- Retrieve all the data
  curl http://localhost:8080/metadata

-- Retrieve data based on search parameters:
curl http://localhost:8080/metadata?title=Valid+App+1\&version=0.0.1
curl http://localhost:8080/metadata?title=App