Unicode repr failure in DataFrame
```
In [9]: df = read_clipboard(header=None, sep='\s+')

In [10]: df
Out[10]: ---------------------------------------------------------------------------
UnicodeDecodeError                        Traceback (most recent call last)
/Users/wesm/<ipython-input-10-7ed0097d7e9e> in <module>()
----> 1 df

/Users/wesm/code/repos/ipython/IPython/core/displayhook.pyc in __call__(self, result)
    236             self.start_displayhook()
    237             self.write_output_prompt()
--> 238             format_dict = self.compute_format_data(result)
    239             self.write_format_data(format_dict)
    240             self.update_user_ns(result)

/Users/wesm/code/repos/ipython/IPython/core/displayhook.pyc in compute_format_data(self, result)
    148             MIME type representation of the object.
    149         """
--> 150         return self.shell.display_formatter.format(result)
    151 
    152     def write_format_data(self, format_dict):

/Users/wesm/code/repos/ipython/IPython/core/formatters.pyc in format(self, obj, include, exclude)
    124                     continue
    125             try:
--> 126                 data = formatter(obj)
    127             except:
    128                 # FIXME: log the exception

/Users/wesm/code/repos/ipython/IPython/core/formatters.pyc in __call__(self, obj)
    445                 type_pprinters=self.type_printers,
    446                 deferred_pprinters=self.deferred_printers)
--> 447             printer.pretty(obj)
    448             printer.flush()
    449             return stream.getvalue()

/Users/wesm/code/repos/ipython/IPython/lib/pretty.pyc in pretty(self, obj)
    349             if hasattr(obj_class, '_repr_pretty_'):
    350                 return obj_class._repr_pretty_(obj, self, cycle)
--> 351             return _default_pprint(obj, self, cycle)
    352         finally:
    353             self.end_group()

/Users/wesm/code/repos/ipython/IPython/lib/pretty.pyc in _default_pprint(obj, p, cycle)
    469     if getattr(klass, '__repr__', None) not in _baseclass_reprs:
    470         # A user-provided repr.
--> 471         p.text(repr(obj))
    472         return
    473     p.begin_group(1, '<')

/Users/wesm/code/pandas/pandas/core/frame.pyc in __repr__(self)
    458                 self.info(buf=buf, verbose=self._verbose_info)
    459             else:
--> 460                 self.to_string(buf=buf)
    461                 value = buf.getvalue()
    462                 if max([len(l) for l in value.split('\n')]) > terminal_width:

/Users/wesm/code/pandas/pandas/core/frame.pyc in to_string(self, buf, columns, col_space, colSpace, header, index, na_rep, formatters, float_format, sparsify, nanRep, index_names, justify, force_unicode)
   1038                                            index_names=index_names,
   1039                                            header=header, index=index)
-> 1040         formatter.to_string(force_unicode=force_unicode)
   1041 
   1042         if buf is None:

/Users/wesm/code/pandas/pandas/core/format.pyc in to_string(self, force_unicode)
    193 
    194             if self.index:
--> 195                 to_write.append(adjoin(1, str_index, *stringified))
    196             else:
    197                 to_write.append(adjoin(1, *stringified))

/Users/wesm/code/pandas/pandas/core/common.pyc in adjoin(space, *lists)
    398     toJoin = zip(*newLists)
    399     for lines in toJoin:
--> 400         outLines.append(''.join(lines))
    401     return '\n'.join(outLines)
    402 

UnicodeDecodeError: 'ascii' codec can't decode byte 0xe2 in position 1: ordinal not in range(128)
```

here are lines

```
('0  ', u'                        .gitignore ', u'     5 ', ' \xe2\x80\xa2\xe2\x80\xa2\xe2\x80\xa2\xe2\x80\xa2\xe2\x80\xa2')
```
