Update events.rst

Event Subscribers example was missing an apostroph.
getStatusCode returns string, not integer.
Merge pull request #790 from gajus/patch-1

getStatusCode returns string, not integer.
Merge pull request #780 from MelvinLoos/patch-1

Update events.rst
Adding test for redirects with relative paths

Ensure that the relative path is added to url of the
previous request instead of always using the original
Use previous req when creating a redirect req
Not using request_fulluri in stream adapter. Closes #791
Bumped the minor version
Merge pull request #801 from GrahamCampbell/patch-1

Bumped the minor version
Merge pull request #2 from guzzle/master

Update from origin