famafrench, pandas.io.data.DataReader error for files that do not end with line of length 2
I ran into a minor issue reading data from the Fama-French data library in pandas 0.16.2 where for some files in the data library, the file's second edge is not detected.  For example, the DataReader does not return the data from the file 'F-F_Research_Data_5_Factors_2x3_daily_TXT' on Ken French's website:

```python
import pandas as pd
import pandas.io.data as web

five_factors = web.DataReader("F-F_Research_Data_5_Factors_2x3_daily_TXT", "famafrench")
```
The above returns an empty dictionary (no error message is triggered).  It seems this result is due to the DataReader failing to detect the last line of the file as an edge as the file does not end with a line of length 2.  Hence, only the first edge of the file is detected.

Here is the relevant piece of code from within the "get_data_famafrench(name)" function:

```python
line_lengths = np.array(lmap(len, data))
file_edges = np.where(line_lengths == 2)[0]
```
Example showing only a single edge is detected:

```python
print file_edges
(array([2], dtype=int64),)
```

Here is the output of ``pd.show_versions()``

<details>

INSTALLED VERSIONS
------------------
commit: None
python: 2.7.9.final.0
python-bits: 64
OS: Windows
OS-release: 7
machine: AMD64
processor: Intel64 Family 6 Model 60 Stepping 3, GenuineIntel
byteorder: little
LC_ALL: None
LANG: None

pandas: 0.16.2
nose: 1.3.7
Cython: 0.22.1
numpy: 1.8.2
scipy: 0.14.0
statsmodels: 0.6.1
IPython: 3.2.1
sphinx: 1.3.1
patsy: 0.3.0
dateutil: 2.4.2
pytz: 2015.4
bottleneck: 0.8.0
tables: 3.1.1
numexpr: 2.3.1
matplotlib: 1.4.3
openpyxl: 2.0.2
xlrd: 0.9.3
xlwt: 0.7.5
xlsxwriter: 0.7.3
lxml: 3.4.4
bs4: 4.3.2
html5lib: 0.999
httplib2: 0.8
apiclient: None
sqlalchemy: 1.0.6
pymysql: None
psycopg2: None

</details>
