Merge pull request #6064 from y-p/PR_add_deps_show_versions

BLD: add IPython and sphinx to show_versions #6059

Author: y-p

pandas/util/print_versions.py

@@ -64,6 +64,8 @@ def show_versions(as_json=False):
         ("numpy", lambda mod: mod.version.version),
         ("scipy", lambda mod: mod.version.version),
         ("statsmodels", lambda mod: mod.__version__),
+        ("IPython", lambda mod: mod.__version__),
+        ("sphinx", lambda mod: mod.__version__),
         ("patsy", lambda mod: mod.__version__),
         ("scikits.timeseries", lambda mod: mod.__version__),
         ("dateutil", lambda mod: mod.__version__),