Enable final newline rule

.scss-lint.yml

@@ -75,7 +75,7 @@ linters:
   # when adding lines to the file, since SCM systems such as git won't
   # think that you touched the last line.
   FinalNewline:
-    enabled: false
+    enabled: true
 
   # HEX colors should use three-character values where possible.
   HexLength: