Updated EditorConfig Recommendations

Applied 4-spaces for everything as per: https://locomotivemtl.teamwork.com/tasks/7113032

.editorconfig

@@ -4,12 +4,11 @@ root = true
 
 [*]
 charset = utf-8
-indent_style = tab
-indent_size = 4
 end_of_line = lf
-trim_trailing_whitespace = true
-insert_final_newline = true
-
-[{*.md,.*rc,.*.json,*.yml,.editorconfig,.env,.env.*,.git*,.htaccess,.jshintignore,bower.json,composer.json,package.json}]
+indent_size = 4
 indent_style = space
-indent_size = 2
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.{md,markdown}]
+trim_trailing_whitespace = false