update Social SDK 2.2.1
update UMeng Social SDK to 2.2.1.1
Merge pull request #8 from Gavin-Ye/master

update  UmengSocial SDK to 2.2.1
Merge pull request #3530 from umeng/master

ADDED: UMengSocial 2.2.1.1 and FIXED: [bug] UMengSocial 2.2.1