* Adds Dnsimple as a provider

* chore(vendor): remove vendor for smaller diff

* fix(config): make dnsimple selectable via flags

* Fix delete and update

* Dnsimple testify mock tests

* remove leaked file

* Move and simplify mock functions

* chore: use lowercase for logrus repository

* chore: update dependencies using glide

* chore: vendor dnsimple-go package

* ref: isolate suitable type in source package

* add support for DNSimple, thx @jose5918 :D