do not draw new line on the top (borderless)

[raffis]

Current situation

If data gets streamed to stdout and no border is configured (void), a leading new line
gets written to stdout at the beginning.

Should

With no borders there shouldn't be a new line on the top.

Reproduce

const createStream = require('table').createStream;
const getBorderCharacters = require('table').getBorderCharacters;

let config,
  stream;

config = {
  border: getBorderCharacters('void'), //no problem using ramac for example.
  columnDefault: {
    width: 50
  },
  columnCount: 1
};

stream = createStream(config);

setInterval(() => {
  stream.write([new Date()]);
}, 500);

[coveralls]

Pull Request Test Coverage Report for Build 185

• 4 of 4 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.4%) to 74.074%

---

Totals
Change from base Build 179:	0.4%
Covered Lines:	172
Relevant Lines:	233

---

💛 - Coveralls

[gajus]

🎉 This PR is included in version 5.4.6 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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