TST: test_encode in test_html
@cpcloud not sure if this is something I did (or didn't do)

I was testing the index sub-class on 3.4 (may have appeared on travis too)

`/mnt/home/jreback/venv/py3.4/index/pandas/io/tests/data/html_encoding/chinese_utf-16.html'`

```
======================================================================
ERROR: test_encode (pandas.io.tests.test_html.TestReadHtmlEncoding)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/mnt/home/jreback/venv/py3.4/index/pandas/io/tests/test_html.py", line 627, in test_encode
    from_string = self.read_string(f, encoding).pop()
  File "/mnt/home/jreback/venv/py3.4/index/pandas/io/tests/test_html.py", line 622, in read_string
    return self.read_html(fobj.read(), encoding=encoding, index_col=0)
  File "/mnt/home/jreback/venv/py3.4/index/pandas/io/tests/test_html.py", line 610, in read_html
    return read_html(*args, **kwargs)
  File "/mnt/home/jreback/venv/py3.4/index/pandas/io/html.py", line 843, in read_html
    parse_dates, tupleize_cols, thousands, attrs, encoding)
  File "/mnt/home/jreback/venv/py3.4/index/pandas/io/html.py", line 709, in _parse
    raise_with_traceback(retained)
  File "/mnt/home/jreback/venv/py3.4/index/pandas/compat/__init__.py", line 705, in raise_with_traceback
    raise exc.with_traceback(traceback)
TypeError: Cannot read object of type 'bytes'

----------------------------------------------------------------------
Ran 64 tests in 61.014s

FAILED (errors=1)
(py3.4)jreback@sheep:~/venv/py3.4/index$ nosetests pandas//io/tests/test_html.py  --pdb --pdb-failure^C
(py3.4)jreback@sheep:~/venv/py3.4/index$ python ci/print_versions.py 

INSTALLED VERSIONS
------------------
commit: d1c4fbb0d170cfaf920a27907c014e8cc45752d1
python: 3.4.0.beta.3
python-bits: 64
OS: Linux
OS-release: 2.6.32-5-amd64
machine: x86_64
processor: 
byteorder: little
LC_ALL: None
LANG: en_US.UTF-8

pandas: None
nose: 1.3.3
Cython: 0.20.2
numpy: 1.8.0
scipy: 0.13.3
statsmodels: None
IPython: None
sphinx: None
patsy: 0.3.0
scikits.timeseries: None
dateutil: 2.2
pytz: 2014.4
bottleneck: 0.8.0
tables: 3.1.0
numexpr: 2.4
matplotlib: 1.3.1
openpyxl: 2.0.4
xlrd: 0.9.3
xlwt: None
xlsxwriter: 0.5.6
lxml: 3.3.5
bs4: 4.3.2
html5lib: 0.999
httplib2: None
apiclient: None
rpy2: None
sqlalchemy: 0.9.6
pymysql: 0.6.1.None
psycopg2: 2.5.2 (dt dec pq3 ext)
```
