DOC: add level option in Series.reset_index to release notes

Author: changhiskhan

RELEASE.rst

@@ -45,6 +45,7 @@ pandas 0.9.0
   - Add `na_action='ignore'` to Series.map to quietly propagate NAs (#1661)
   - Add args/kwds options to Series.apply (#1829)
   - Add inplace option to Series/DataFrame.reset_index (#1797)
+  - Add ``level`` parameter to ``Series.reset_index``
   - Add quoting option for DataFrame.to_csv (#1902)
   - Indicate long column value truncation in DataFrame output with ... (#1854)
   - DataFrame.dot will not do data alignment, and also work with Series (#1915)

doc/source/v0.9.0.txt

@@ -20,6 +20,7 @@ New features
     Finance (GH1748_, GH1739_)
   - More flexible parsing of boolean values (Yes, No, TRUE, FALSE, etc)
     (GH1691_, GH1295_)
+  - Add ``level`` parameter to ``Series.reset_index``
 
 API changes
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