Added Markdown rule to editorconfig

Markdown uses two spaces to encode a line break. Editors usually removes them without this configuration which can prove quite frustrating.

Added Markdown rule to editorconfig
2f9031fa · Raphaël Doursenaud · 9dade02d · 2f9031fa
Unverified Commit 2f9031fa authored 8 years ago by Raphaël Doursenaud
--- a/.editorconfig
+++ b/.editorconfig
@@ -15,3 +15,5 @@ indent_style = tab
 indent_style = tab
 [*.xml]
 indent_style = tab
+[*.md]
+trim_trailing_whitespace = false