'Show about dialog'

def about(self, event):

    info = wx.AboutDialogInfo()
    info.SetIcon(wx.Icon(iconfile('pronterface.png'), wx.BITMAP_TYPE_PNG))
    info.SetName('Printrun')
    info.SetVersion(printcore.__version__)
    description = _('Printrun    is    a    pure    Python    3D    printing    (and    other    types    of    CNC)    host    software.')
    description += ('\n\n' + (_('%.02fmm    of    filament    have    been    extruded    during    prints') % self.settings.total_filament_used))
    info.SetDescription(description)
    info.SetCopyright('(C)    2011    -    2015')
    info.SetWebSite('https://github.com/kliment/Printrun')
    licence = 'Printrun    is    free    software:    you    can    redistribute    it    and/or    modify    it    under    the\nterms    of    the    GNU    General    Public    License    as    published    by    the    Free    Software\nFoundation,    either    version    3    of    the    License,    or    (at    your    option)    any    later\nversion.\n\nPrintrun    is    distributed    in    the    hope    that    it    will    be    useful,    but    WITHOUT    ANY\nWARRANTY;    without    even    the    implied    warranty    of    MERCHANTABILITY    or    FITNESS    FOR    A\nPARTICULAR    PURPOSE.        See    the    GNU    General    Public    License    for    more    details.\n\nYou    should    have    received    a    copy    of    the    GNU    General    Public    License    along    with\nPrintrun.    If    not,    see    <http://www.gnu.org/licenses/>.'
    info.SetLicence(licence)
    info.AddDeveloper('Kliment    Yanev')
    info.AddDeveloper('Guillaume    Seguin')
    wx.AboutBox(info)
