improvement: Prepare package for 2.0.0 release

[dm36]

improvement: Prepares package for 2.0.0 release

Adds examples files, updates the README and removes the logger subdirectory.

Semver: Patch
Ref: LOG-7109

[esatterwhite]

Cross compiling Go is rather trivial these days. Rather that releasing a zip of source, why not provide pre-built binaries?
Or better, provide both. Source zip and prebuilt binaries for win, macos + linux. You don't even need the native OS to do it in most cases

# build for macos on linux
GOOS=darwin GOARCH=amd64  go build logger.go

# build for windows on linux
GOOS=windows and GOARCH=386 go build logger.go

Thats a pretty simple first step before with out needing to figure out OS package managers.
Should probably also provide a tar.gz file which is more common place on *nix systems.

Make it easy for people. Most users would rather not have to compile things.

[mdeltito]

As a library, it's not useful for this to be compiled on its own - a standalone binary would not do anything.

@dm36 what is the reason for generating a zip file as a release on github here?

[dm36]

@mdeltito i think that was a change implemented by @smusali so will delegate to him to answer that question- but yup looks like the circleci config zips and packages it for release- it looks like we do this for the logger-node project as well: https://github.com/logdna/logger-node/blob/master/.circleci/config.yml