Added .editorconfig

.editorconfig

@@ -0,0 +1,18 @@
+; http://editorconfig.org/
+root = true
+
+[*]
+charset = utf-8
+end_of_line = LF
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[*.php]
+indent_style = space
+indent_size = 4
+
+[*.c]
+indent_style = tab
+
+[*.h]
+indent_style = tab