Add .editorconfig configuration file.
Add .editorconfig configuration file.

Editorconfig (http://editorconfig.org/) is a handy tool for managing
basic coding style conventions across editors per project (see the
website for a list of editors/IDE's that are supported).
Especially when dealing with different Fork CMS projects, this can come
in handy.

bartdc/forkcms,justcarakas/forkcms,mathiashelin/forkcms,jeroendesloovere/forkcms,wengyulin/forkcms,WouterSioen/forkcms,nosnickid/forkcms,matthiasmullie/forkcms,jonasdekeukelaere/forkcms,dmoerman/forkcms,jeroendesloovere/forkcms,vytsci/forkcms,ikoene/forkcms,sumocoders/forkcms,Saxithon/gh-pages,carakas/forkcms,jonasdekeukelaere/forkcms,carakas/forkcms,jacob-v-dam/forkcms,matthiasmullie/forkcms,DegradationOfMankind/forkcms,forkcms/forkcms,riadvice/forkcms,jonasdekeukelaere/forkcms,wengyulin/forkcms,jessedobbelaere/forkcms,justcarakas/forkcms,ikoene/forkcms,DegradationOfMankind/forkcms,jeroendesloovere/forkcms,tommyvdv/forkcms,jonasdekeukelaere/forkcms,vytenizs/forkcms,sumocoders/forkcms,carakas/forkcms,Katrienvh/forkcms,jonasdekeukelaere/forkcms,dmoerman/forkcms,vytenizs/forkcms,tommyvdv/forkcms,jacob-v-dam/forkcms,vytenizs/forkcms,Saxithon/gh-pages,ikoene/forkcms,mathiashelin/forkcms,vytsci/forkcms,tommyvdv/forkcms,Katrienvh/forkcms,sumocoders/forkcms,forkcms/forkcms,nosnickid/forkcms,DegradationOfMankind/forkcms,jessedobbelaere/forkcms,sumocoders/forkcms,carakas/forkcms,riadvice/forkcms,Thijzer/forkcms,jacob-v-dam/forkcms,carakas/forkcms,Katrienvh/forkcms,forkcms/forkcms,forkcms/forkcms,jessedobbelaere/forkcms,nosnickid/forkcms,dmoerman/forkcms,vytsci/forkcms,bartdc/forkcms,justcarakas/forkcms,wengyulin/forkcms,Thijzer/forkcms,Thijzer/forkcms,jessedobbelaere/forkcms,riadvice/forkcms,jacob-v-dam/forkcms,sumocoders/forkcms,mathiashelin/forkcms,riadvice/forkcms,WouterSioen/forkcms,DegradationOfMankind/forkcms,tommyvdv/forkcms,Katrienvh/forkcms,bartdc/forkcms,jeroendesloovere/forkcms,matthiasmullie/forkcms,mathiashelin/forkcms