Modified .coveragerc to ignore fixed_standard_scaler, since that code is nearly identical to sklearn's (except for one line) and we only use it for versions before 0.14.
Modified .coveragerc to ignore fixed_standard_scaler, since that code is nearly identical to sklearn's (except for one line) and we only use it for versions before 0.14.

ernfrid/skll,ernfrid/skll