docs: Fix a few typos

INSTALL.md

@@ -51,7 +51,7 @@ ImportError: No module named googleanalytics
 
 I strongly suggest developing in a virtual environment using [virtualenv](http://pypi.python.org/pypi/virtualenv) with its own Python interpreter.  You don't have to, but you might find your python development experience is a little nicer.
 
-If you plan on using virtualenv, I then highly reccomend you get Doug Hellmann's `virtualenvwrapper` running which simplified the process of creating and managing virtual environment like so:
+If you plan on using virtualenv, I then highly recommend you get Doug Hellmann's `virtualenvwrapper` running which simplified the process of creating and managing virtual environment like so:
 
 *Switching to a new environment:*
 

src/googleanalytics/account.py

@@ -86,7 +86,7 @@ def get_data(self, start_date, end_date, metrics, dimensions=[], sort=[], filter
 
           Filters can be combined with AND boolean logic as well as with OR 
           boolean logic. When using both operators, the OR operator has higher 
-          precendence. When you are using more than one filter, please specify
+          precedence. When you are using more than one filter, please specify
           a fourth item in your list 'AND' or 'OR' to explicitly spell out the
           filters' relationships: