Bump to version 2.4.0

Release 2.3.0

Version 2.2.0

Release 2.1.2

Version 2.1.1 release

Update README

New endpoint /info to support exposing results of `INFO` command (#20)

This allows users to check Redis DB status easily, and allows Rediseen to become a connector between Redis DB and any monitorning system/dashboard.

BUmp version to 1.4.1

Bump to version 1.4.0

Support API Key Authentication; Integration Test against Different Re…

…dis Versions; Integration Test Cleanup; go module update (#16)

- API Key Authentication:
  a simple authentication is added, which is based on API Key.
  If environment variable REDISEEN_API_KEY is set and not "", authentication is enforced. Then client 
  has to add X-API-KEY in request header in order to access API, otherwise a 401 error will be given.
  By default, there is no authentication enforced, but a WARNING will be printed in the log.
- Integration Test against Different Redis Versions
- Clean up Integration Test:
  the older check based on grep in integration test is not needed anymore. So removing them.
- go module update: Run "go get -u -t ./..." and "go mod tidy"