typing fix & doc update

Merge pull request #18 from drexler/version-fix-cli

read version from package & fix chalk typing issue

CLI version fix

fix to CLI version returning 0.1.0 constantly.
updates to Changelog.

readme version badge

added versioning badge to package.

error highlighting fixes

Merge pull request #14 from drexler/error-classes

fix and improve error highlighting

initial release

Merge pull request #13 from drexler/package-finalization

update package info