DOC: update dependency lists. close #2406

Author: wesm

README.rst

@@ -69,17 +69,19 @@ Optional dependencies
 ~~~~~~~~~~~~~~~~~~~~~
 
   * `Cython <http://www.cython.org>`__: Only necessary to build development
-    version
+    version. Version 0.17.1 or higher.
   * `SciPy <http://www.scipy.org>`__: miscellaneous statistical functions
   * `PyTables <http://www.pytables.org>`__: necessary for HDF5-based storage
   * `matplotlib <http://matplotlib.sourceforge.net/>`__: for plotting
-  * `scikits.statsmodels <http://statsmodels.sourceforge.net/>`__
+  * `statsmodels <http://statsmodels.sourceforge.net/>`__
      * Needed for parts of :mod:`pandas.stats`
   * `pytz <http://pytz.sourceforge.net/>`__
-     * Needed for time zone support with ``DateRange``
+     * Needed for time zone support with ``date_range``
   * `openpyxl <http://packages.python.org/openpyxl/>`__, `xlrd/xlwt <http://www.python-excel.org/>`__
+     * openpyxl version 1.6.1 or higher
      * Needed for Excel I/O
 
+
 Installation from sources
 =========================
 

doc/source/install.rst

@@ -68,16 +68,22 @@ Dependencies
   * `NumPy <http://www.numpy.org>`__: 1.6.1 or higher
   * `python-dateutil <http://labix.org/python-dateutil>`__ 1.5
 
+
 Optional dependencies
 ~~~~~~~~~~~~~~~~~~~~~
 
+  * `Cython <http://www.cython.org>`__: Only necessary to build development
+    version. Version 0.17.1 or higher.
   * `SciPy <http://www.scipy.org>`__: miscellaneous statistical functions
   * `PyTables <http://www.pytables.org>`__: necessary for HDF5-based storage
   * `matplotlib <http://matplotlib.sourceforge.net/>`__: for plotting
-  * `statsmodels <http://statsmodels.sourceforge.net/>`__: 0.4.0 or higher
+  * `statsmodels <http://statsmodels.sourceforge.net/>`__
      * Needed for parts of :mod:`pandas.stats`
   * `pytz <http://pytz.sourceforge.net/>`__
-     * Needed for time zone support with ``date_range``
+     * Needed for time zone support
+  * `openpyxl <http://packages.python.org/openpyxl/>`__, `xlrd/xlwt <http://www.python-excel.org/>`__
+     * openpyxl version 1.6.1 or higher
+     * Needed for Excel I/O
 
 .. note::