Long variable names table formatting in ols
```
Running pd.ols from pandas 0.8.1, I get misaligned output when some of my variable names are long. For example:

[...]

-----------------------Summary of Estimated Coefficients------------------------
      Variable       Coef    Std Err     t-stat    p-value    CI 2.5%   CI 97.5%
--------------------------------------------------------------------------------
provision_alll_ratio     0.8377     0.0030     281.62     0.0000     0.8319     0.8436
lead_1_provision_alll_ratio     0.0322     0.0033       9.70     0.0000     0.0257     0.0387
lead_2_provision_alll_ratio     0.0332     0.0033      10.02     0.0000     0.0267     0.0397
lead_3_provision_alll_ratio     0.0245     0.0033       7.39     0.0000     0.0180     0.0310
lead_4_provision_alll_ratio     0.0119     0.0030       4.00     0.0001     0.0061     0.0177
--------------------------------------------------------------------------------
     intercept    -0.0005     0.0000     -28.57     0.0000    -0.0005    -0.0004
---------------------------------End of Summary---------------------------------

Is there a way to make the first output field long enough to fit the longest variable name?

Thanks,

Richard Stanton
```
