TST: added skip excel test for no xlrd installed

Author: adamklein

pandas/io/tests/test_parsers.py

@@ -220,6 +220,11 @@ def test_read_csv_no_index_name(self):
         assert_frame_equal(df, df2)
 
     def test_excel_stop_iterator(self):
+        try:
+            import xlrd
+        except ImportError:
+            raise nose.SkipTest('xlrd not installed, skipping')
+
         excel_data = ExcelFile(os.path.join(self.dirpath, 'test2.xls'))
         parsed = excel_data.parse('Sheet1')
         expected = DataFrame([['aaaa','bbbbb']], columns=['Test', 'Test1'])