update fernignore (#163)

* update fernignore

* remove ignores

---------

Co-authored-by: jsklan <[email protected]>

Author: fern-support

.fernignore

@@ -1,2 +1,8 @@
 lib/square_legacy/
-lib/square_legacy.rb
+lib/square_legacy.rb
+Gemfile
+Rakefile
+.rubocop
+square.gemspec
+.gitignore
+test/