DOC/CLN: typo and redundant code

Author: kawochen

doc/README.rst

@@ -114,7 +114,7 @@ Often it will be necessary to rebuild the C extension after updating::
 Building the documentation
 ^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-So how do you build the docs? Navigate to your local  the folder
+So how do you build the docs? Navigate to your local folder
 ``pandas/doc/`` directory in the console and run::
 
     python make.py html

doc/source/gotchas.rst

@@ -297,7 +297,7 @@ concise means of selecting data from a pandas object:
    df
    df.ix[['b', 'c', 'e']]
 
-This is, of course, completely equivalent *in this case* to using th
+This is, of course, completely equivalent *in this case* to using the
 ``reindex`` method:
 
 .. ipython:: python
@@ -455,7 +455,7 @@ parse HTML tables in the top-level pandas io function ``read_html``.
 
    * Drawbacks
 
-     * |lxml|_ does *not* make any guarantees about the results of it's parse
+     * |lxml|_ does *not* make any guarantees about the results of its parse
        *unless* it is given |svm|_.
 
      * In light of the above, we have chosen to allow you, the user, to use the

pandas/core/groupby.py

@@ -218,7 +218,6 @@ def __init__(self, key=None, level=None, freq=None, axis=0, sort=False):
         self.obj=None
         self.indexer=None
         self.binner=None
-        self.grouper=None
 
     @property
     def ax(self):
@@ -424,7 +423,7 @@ def _get_indices(self, names):
         """ safe get multiple indices, translate keys for datelike to underlying repr """
 
         def get_converter(s):
-            # possibly convert to they actual key types
+            # possibly convert to the actual key types
             # in the indices, could be a Timestamp or a np.datetime64
             if isinstance(s, (Timestamp,datetime.datetime)):
                 return lambda key: Timestamp(key)