examples not running, error in documentation
Both examples do not run. In finance.py, on line 83:

```
 filledRatio = ibm / ibmMonthly.reindex(ibm.index, fillMethod='pad')
```

should be:

```
 filledRatio = ibm / ibmMonthly.reindex(ibm.index, method='pad')
```

As reindex is defined in core/series.py as 

```
 def reindex(self, index=None, method=None):
```

This error is repeated in the documentation at http://pandas.sourceforge.net (reindex uses the argument fillMethod instead of method). 

running regressions.py, I get the following error:

Traceback (most recent call last):
  File "regressions.py", line 30, in <module>
    model = ols(y=Y, x=X)
  File "/usr/local/lib/python2.6/dist-packages/pandas/stats/interface.py", line 117, in ols
    return klass(**kwargs)
  File "/usr/local/lib/python2.6/dist-packages/pandas/stats/ols.py", line 56, in **init**
    self.sm_ols = sm.OLS(self._y_raw, self._x.values).fit()
AttributeError: 'module' object has no attribute 'OLS'

It's possible I'm somehow combining incompatible versions of pandas, but I don't see how, considering I downloaded pandas today, once. The first bug, at least seems like a simple code error.

Hopefully this is of some help,
Colum
