Small fix example in README.md

[rrzaripov]

Just fix variable name to widget. Tested using this HelloWidget class:

from PyQt4 import QtCore, QtGui


class HelloWidget(QtGui.QWidget):
    def __init__(self, parent=None):
        QtGui.QWidget.__init__(self, parent)

        self.button_greet = QtGui.QPushButton()
        self.greet_label = QtGui.QLabel()
        self.connect(self.button_greet, QtCore.SIGNAL('clicked()'),
                     self, QtCore.SLOT('set_text()'))

    @QtCore.pyqtSlot()
    def set_text(self):
        self.greet_label.setText('Hello!')


def test_hello(qtbot):
    widget = HelloWidget()
    qtbot.addWidget(widget)

    # click in the Greet button and make sure it updates the appropriate label
    qtbot.mouseClick(widget.button_greet, QtCore.Qt.LeftButton)

    assert widget.greet_label.text() == 'Hello!'

[coveralls]

Coverage remained the same at 100.0% when pulling 759b30d on rrzaripov:clarify-example-in-readme into 6996b75 on pytest-dev:master.

[nicoddemus]

Thanks a lot!