added server service authorization via Vkontakte code
added Vkontakte get user info
service server side authorization fix in Vkontakte sharer
merge with Sharekit/Master
BUGFIX: fixed some memory leaks
Merge commit '3139b163ae30f44dd5ea536e9336c7719f39d4b2' into develop
BUGFIX: fixed SHKFacebook's SHKShareTypeUserInfo behaviour

- logout now deletes also userInfo dictionary from defaults
- sendDidStart is called at the end of doSend method. Some shareTypes (such as SHKShareTypeUserInfo) set quiet to yes during doSend method. Otherwise activityIndicator might scroll forever during SHKShareTypeUserInfo.
BUGFIX: non-native Facebook now shows form also for SHKShareTypeURL
BUGFIX: blank white screen after successful login on sharers using SHKFormController
using correct header search path for Facebook target
NEW FEATURE: SHKFacebook SHKShareTypeURL now allows sending empty user's text
Merge pull request #600 from kapilgoenka/fb-header-search-path

using correct header search path for Facebook target
NEW FEATURE: SHKFacebook URL share prefills text with item.text
BUGFIX: SHKiOSFacebook now uses proper delegate
NSURLConnection replaced to SHKRequest
Merge pull request #575 from mikk22/master

added Vkontakte server side authorization and user info request
Merge branch 'master' into develop
BUGFIX: NSAssert was firing unexpectedly on iOS4
BUGFIX: when you have a space in $(SOURCE_ROOT), you could see missing FacebookSDK.h compile error
Merge branch 'develop' of https://github.com/mikk22/ShareKit into develop
added SHKRequest NSData initialization;
Vkontakte sharer refactored: Now it's fully async with delegates.