Added method to get a list of publisher by its external id
Added support for the campaigns exceptions for approval on lists of publisher client
Testing on publisher client for updating lists
Merge branch 'master' of github.com:emailbidding/publisher-client-php into ebf-196-add-control-to-manually-approve-reject-campaigns
Added method to get the approval of only a campaign for a specific list
Changed return object of getCampaignListApproval
Added some indentation
Merge pull request #8 from emailbidding/ebf-196-add-control-to-manually-approve-reject-campaigns

Ebf 196 add control to manually approve reject campaigns