sferik / twitter / 1595

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travis-ci

Dump Twitter::NullObject as JSON properly (#815)

* Dump Twitter::NullObject as JSON properly

```
null = Twitter::NullOjbect.new
{ "null_object" => null }.to_json
```

In previous version, above code raises a TypeError:

    TypeError: wrong argument type Twitter::NullObject (expected String)

* Suppress rubocop warnings

2 of 2 new or added lines in 1 file covered. (100.0%)

1922 of 1927 relevant lines covered (99.74%)

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