Fix issue with Fling#8

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johnsonyuw wants to merge 3 commits intoBCsl:masterfrom

johnsonyuw:master

Commits on May 20, 2017

Fix focus at 2 index, not show first item.
Chandler
committed

Commits on Jun 16, 2017

Fix Fling with no onItemSelected callback issue
Chandler
committed
Merge branch 'master' of https://github.com/johnsonyuw/GalleryLayoutManager
Chandler
committed