Merge pull request #6 from w43l/master

typo in the cursor object name
Correcting namespace in DemographicSearchClasses for issue #7
* Updating to use the latest version of the PHP SDK, see README.md
* Improving custom audience handling, see examples/custom_auciences.php
Updating readme to include requirement for PHP 5.4+
Update the AdAccountGroup calls to correct return adaccounts
Update the unit tests to correctly call gettting of adaccounts
Merge pull request #8 from Ashpants/getadaccountsfix

Update the AdAccountGroup call to correctly return adaccounts
* Correcting issue with AdAccountGroups fetching adaccounts

* Improving handling of AdPreviews
Correcting fetching adaccount connection of AdAccountGroup

Corrected readIds function
Corrected name of bid info var for ACTIONS
Fixed adgroupconversions endpoint typo in AdAccount.php
Merge pull request #10 from archanl/master

Fixed adgroupconversions endpoint typo in AdAccount.php