Merge pull request #257 from WindowsAzure/master

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Windows Azure Storage Client Library 2.1.0.2
Merge pull request #259 from sozler/dev

Windows Azure Storage Client Library 2.1.0.2
Update changelog
Update changelog
Merge pull request #261 from sozler/dev

Update changelog
Merge pull request #260 from WindowsAzure/dev

Windows Azure Storage Client Library 2.1.0.2