Merge pull request #36 from pwendell/v2

V2
update to use tachyon 0.4.0
use s3 to download tachyon jar
Merge remote-tracking branch 'upstream/v2' into v2
Merge pull request #39 from haoyuan/v2

Upgrade Tachyon to v0.4.0
update tachyon to 0.4.1
Merge pull request #40 from haoyuan/v2

update tachyon to 0.4.1
download tachyon tar files from s3 instead of github.
Merge pull request #41 from haoyuan/v2

download tachyon tar files from s3 instead of github.
Added referecences to 0.9.1 binaries.
Merge pull request #44 from tdas/v2

Added referecences to 0.9.1 binaries
Add Shark 0.9.1 support