Add implementation of Plurk service.
Fix compiling error for Plurk service.
Add Plurk demo app API key.
Better error handling and ask user to relogin when required.
Rewrite image uploading response handling using JSON.
Add Hatena Bookmark Sharer.
Fixed.
Update evernote-ios-sdk.
Rename sharer title.
added server service authorization via Vkontakte code
added Vkontakte get user info
service server side authorization fix in Vkontakte sharer
merge with Sharekit/Master
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