Merge pull request #605 from bilke/editor-config

Use editorconfig

.editorconfig

+root = true
+
+[*]
+indent_style = tab
+insert_final_newline = true
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[*.md]
+trim_trailing_whitespace = false
+indent_style = spaces
+indent_size = 4