Update `.editorconfig`
Update `.editorconfig`

Add property in the `.editorconfig` [1] file that prevents the trimming
of trailing whitespaces for Markdown (`.md`) files.

This is done because Markdown uses [2] the trailing whitespaces: "When
you do want to insert a <br/> break tag using Markdown, you end a line
with two or more spaces, then type return."

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[1] http://editorconfig.org/#supported-properties
[2] http://daringfireball.net/projects/markdown/syntax#block

zlot/dotfiles,AlbertoElias/dotfiles,codelandev/init-setup,khornberg/dotfiles,christophermoura/dotfiles,b-boogaard/dotfiles,makabde/dotfiles,mickael83/ubuntu-dotfiles,newtonne/dotfiles,AlbertoElias/dotfiles,girishramnani/dotfiles,stevenirby/dotfiles-1,wingy3181/dotfiles,zlot/dotfiles,makabde/dotfiles,mickael83/ubuntu-dotfiles,pbrooks/dotfiles,girishramnani/dotfiles,sophatvathana/dotfiles,christophermoura/dotfiles,wingy3181/dotfiles,EDiLD/dotfiles,EDiLD/dotfiles,newtonne/dotfiles,wingy3181/dotfiles,oddlord/dotfiles