Synchrophasor: Updated sp2 release notes.
Synchrophasor: Updated sp2 release notes.

git-tfs-id: [https://tfs.codeplex.com/tfs/TFS07]$/openpdc/Synchrophasor/Current Version;C72701

GridProtectionAlliance/openPDC,GridProtectionAlliance/openPDC,GridProtectionAlliance/openPDC,GridProtectionAlliance/openPDC