added editorconfig

Author: Raza Gill

.editorconfig

@@ -0,0 +1,13 @@
+[*.js,*.jsx]
+indent_style = tab
+indent_size = 2
+end_of_line = LF
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[*]
+charset                  = utf-8
+end_of_line              = LF
+trim_trailing_whitespace = true
+insert_final_newline     = true