Merge pull request #138 from ianbarber/master

Fixing token revoking and change URI template quoting
Set a default value for array and map types
Added service MapsEngine.php
Removed Mapsengine.php
Correct a Typo, it's WordPress.
Updated AdExchangeBuyer.php
Updated Doubleclicksearch.php
Updated Analytics.php
Merge pull request #145 from dd32/master

Correct a Typo, it's WordPress.
Updated MapsEngine.php
Updated YouTube.php
Updated Books.php
Updated Freebase.php
Updated Oauth2.php
Updated YouTubeAnalytics.php
Updated Analytics.php
Updated Urlshortener.php
Add check for uninitalized token to fix #150
Merge pull request #152 from ircmaxell/issue_150_fix

A fix for issue 150
Updated MapsEngine.php