adds editor config

.editorconfig

@@ -0,0 +1,20 @@
+root = true
+
+[*]
+end_of_line = lf
+insert_final_newline = true
+indent_style = space
+indent_size = 4
+
+[*.py]
+line_length = 79
+multi_line_output = 4
+balanced_wrapping = true
+use_parentheses = true
+
+[*.json, *.yml, *rc]
+indent_size = 2
+
+[Makefile]
+indent_style = tab
+indent_size = 4