DOC: readme.rst edits

Author: jreback

README.rst

@@ -75,11 +75,9 @@ Highly Recommended Dependencies
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
   - `numexpr <http://code.google.com/p/numexpr/>`__
-
      - Needed to accelerate some expression evaluation operations
      - Required by `PyTables`
   - `bottleneck <http://berkeleyanalytics.com/bottleneck>`__
-
      - Needed to accelerate certain numerical operations
 
 Optional dependencies
@@ -90,15 +88,12 @@ Optional dependencies
   - `PyTables <http://www.pytables.org>`__: necessary for HDF5-based storage
   - `matplotlib <http://matplotlib.sourceforge.net/>`__: for plotting
   - `statsmodels <http://statsmodels.sourceforge.net/>`__
-
      - Needed for parts of :mod:`pandas.stats`
   - `openpyxl <http://packages.python.org/openpyxl/>`__, `xlrd/xlwt <http://www.python-excel.org/>`__
-
      - openpyxl version 1.6.1 or higher, for writing .xlsx files
      - xlrd >= 0.9.0
      - Needed for Excel I/O
   - `lxml <http://lxml.de>`__, or `Beautiful Soup 4 <http://www.crummy.com/software/BeautifulSoup>`__: for reading HTML tables
-
      - The differences between lxml and Beautiful Soup 4 are mostly speed (lxml
        is faster), however sometimes Beautiful Soup returns what you might
        intuitively expect. Both backends are implemented, so try them both to