added method on OKManager to show OpenKit login UI with a completion callback
update demo scene to use login callback
add methods to OKManager and meta files are back for some reason

Conflicts:
	OKPlugins/iOS/OpenKitResources/Resources/OKFBLoginCell.xib.meta
	OKPlugins/iOS/OpenKitResources/Resources/OKLeaderboardViewController.xib.meta
	OKPlugins/iOS/OpenKitResources/Resources/OKLeaderboardsListViewController.xib.meta
	OKPlugins/iOS/OpenKitResources/Resources/OKNickViewController.xib.meta
	OKPlugins/iOS/OpenKitResources/Resources/OKProfileViewController.xib.meta
	OKPlugins/iOS/OpenKitResources/Resources/OKScoreViewController.xib.meta
	OKPlugins/iOS/OpenKitResources/Resources/OKSocialLeaderboardVC.xib.meta
	OKPlugins/iOS/OpenKitResources/Resources/back_button.png.meta
	OKPlugins/iOS/OpenKitResources/Resources/back_button@2x.png.meta
	OKPlugins/iOS/OpenKitResources/Resources/close.png.meta
	OKPlugins/iOS/OpenKitResources/Resources/close@2x.png.meta
	OKPlugins/iOS/OpenKitResources/Resources/facebook_icon.png.meta
	OKPlugins/iOS/OpenKitResources/Resources/facebook_icon@2x.png.meta
	OKPlugins/iOS/OpenKitResources/Resources/fb_off_big.png.meta
	OKPlugins/iOS/OpenKitResources/Resources/fb_off_big@2x.png.meta
	OKPlugins/iOS/OpenKitResources/Resources/fb_on_big.png.meta
	OKPlugins/iOS/OpenKitResources/Resources/fb_on_big@2x.png.meta
	OKPlugins/iOS/OpenKitResources/Resources/gamecenter_icon.png.meta
	OKPlugins/iOS/OpenKitResources/Resources/gamecenter_icon@2x.png.meta
	OKPlugins/iOS/OpenKitResources/Resources/gc_off_big.png.meta
	OKPlugins/iOS/OpenKitResources/Resources/gc_off_big@2x.png.meta
	OKPlugins/iOS/OpenKitResources/Resources/gc_on_big.png.meta
	OKPlugins/iOS/OpenKitResources/Resources/gc_on_big@2x.png.meta
	OKPlugins/iOS/OpenKitResources/Resources/gear.png.meta
	OKPlugins/iOS/OpenKitResources/Resources/gear@2x.png.meta
	OKPlugins/iOS/OpenKitResources/Resources/include_fb_off.png.meta
	OKPlugins/iOS/OpenKitResources/Resources/include_fb_off@2x.png.meta
	OKPlugins/iOS/OpenKitResources/Resources/include_fb_on.png.meta
	OKPlugins/iOS/OpenKitResources/Resources/include_fb_on@2x.png.meta
	OKPlugins/iOS/OpenKitResources/Resources/include_gc_off.png.meta
	OKPlugins/iOS/OpenKitResources/Resources/include_gc_off@2x.png.meta
	OKPlugins/iOS/OpenKitResources/Resources/include_gc_on.png.meta
	OKPlugins/iOS/OpenKitResources/Resources/include_gc_on@2x.png.meta
	OKPlugins/iOS/OpenKitResources/Resources/invite.png.meta
	OKPlugins/iOS/OpenKitResources/Resources/invite@2x.png.meta
	OKPlugins/iOS/OpenKitResources/Resources/settings.png.meta
	OKPlugins/iOS/OpenKitResources/Resources/settings@2x.png.meta
	OKPlugins/iOS/OpenKitResources/include/AFImageView.h.meta
	OKPlugins/iOS/OpenKitResources/include/AbstractActionSheetPicker.h.meta
	OKPlugins/iOS/OpenKitResources/include/ActionSheetStringPicker.h.meta
	OKPlugins/iOS/OpenKitResources/include/KGModal.h.meta
	OKPlugins/iOS/OpenKitResources/include/OKBaseLoginViewController.h.meta
	OKPlugins/iOS/OpenKitResources/include/OKCloud.h.meta
	OKPlugins/iOS/OpenKitResources/include/OKColors.h.meta
	OKPlugins/iOS/OpenKitResources/include/OKDefines.h.meta
	OKPlugins/iOS/OpenKitResources/include/OKError.h.meta
	OKPlugins/iOS/OpenKitResources/include/OKFBLoginCell.h.meta
	OKPlugins/iOS/OpenKitResources/include/OKFacebookUtilities.h.meta
	OKPlugins/iOS/OpenKitResources/include/OKFileUtil.h.meta
	OKPlugins/iOS/OpenKitResources/include/OKGKScoreWrapper.h.meta
	OKPlugins/iOS/OpenKitResources/include/OKGUI.h.meta
	OKPlugins/iOS/OpenKitResources/include/OKGameCenterUtilities.h.meta
	OKPlugins/iOS/OpenKitResources/include/OKHelper.h.meta
	OKPlugins/iOS/OpenKitResources/include/OKLeaderboard.h.meta
	OKPlugins/iOS/OpenKitResources/include/OKLeaderboardListCell.h.meta
	OKPlugins/iOS/OpenKitResources/include/OKLeaderboardViewController.h.meta
	OKPlugins/iOS/OpenKitResources/include/OKLeaderboardsListViewController.h.meta
	OKPlugins/iOS/OpenKitResources/include/OKLeaderboardsViewController.h.meta
	OKPlugins/iOS/OpenKitResources/include/OKLocalCache.h.meta
	OKPlugins/iOS/OpenKitResources/include/OKLoginView.h.meta
	OKPlugins/iOS/OpenKitResources/include/OKMacros.h.meta
	OKPlugins/iOS/OpenKitResources/include/OKManager.h.meta
	OKPlugins/iOS/OpenKitResources/include/OKNetworker.h.meta
	OKPlugins/iOS/OpenKitResources/include/OKNickViewController.h.meta
	OKPlugins/iOS/OpenKitResources/include/OKProfileViewController.h.meta
	OKPlugins/iOS/OpenKitResources/include/OKScore.h.meta
	OKPlugins/iOS/OpenKitResources/include/OKScoreCache.h.meta
	OKPlugins/iOS/OpenKitResources/include/OKScoreCell.h.meta
	OKPlugins/iOS/OpenKitResources/include/OKScoreProtocol.h.meta
	OKPlugins/iOS/OpenKitResources/include/OKScoreViewCell.h.meta
	OKPlugins/iOS/OpenKitResources/include/OKScoreViewController.h.meta
	OKPlugins/iOS/OpenKitResources/include/OKSessionDb.h.meta
	OKPlugins/iOS/OpenKitResources/include/OKSocialLeaderboardViewController.h.meta
	OKPlugins/iOS/OpenKitResources/include/OKSpinnerCell.h.meta
	OKPlugins/iOS/OpenKitResources/include/OKTwitterUtilities.h.meta
	OKPlugins/iOS/OpenKitResources/include/OKUser.h.meta
	OKPlugins/iOS/OpenKitResources/include/OKUserProfileImageView.h.meta
	OKPlugins/iOS/OpenKitResources/include/OKUserUtilities.h.meta
	OKPlugins/iOS/OpenKitResources/include/OKUtils.h.meta
	OKPlugins/iOS/OpenKitResources/include/OpenKit.h.meta
	OKPlugins/iOS/OpenKitResources/include/SimpleKeychain.h.meta
update to latest release jars from dev branch on ios, master branch on android
update unity4 demo scene to show use of login window callback