Add editorconfig file

.editorconfig

@@ -0,0 +1,23 @@
+root = true
+
+[*]
+indent_style = space
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.{js,py,html,css,less,yml,yaml,json}]
+charset = utf-8
+
+[*.py]
+indent_size = 4
+insert_final_newline = false
+
+[Makefile]
+indent_style = tab
+
+[*.{json,yaml,yml}]
+indent_size = 2
+
+[*.{ini,html}]
+indent_size = 4