Update InnerBrowser.php

[CJDennis]

Allow all options to be deselected by passing through an empty array

[Naktibalda]

Please add test for this change similar to

lib-innerbrowser/tests/unit/Codeception/Module/TestsForWeb.php

Lines 374 to 382 in 00947b1

	public function testSelectMultipleOptionsByText()
	{
	$this->module->amOnPage('/form/select_multiple');
	$this->module->selectOption('What do you like the most?', array('Play Video Games', 'Have Sex'));
	$this->module->click('Submit');
	$form = data::get('form');
	$this->assertSame(array('play', 'adult'), $form['like']);
	}

and rebase this branch on master, I fixed broken test.