Links for Spark 1.0.1 release
Install xfsprogs before mkfs.xfs
Merge pull request #59 from shivaram/v3

Install xfsprogs before mkfs.xfs
add links for spark v0.9.2 release
Merge pull request #60 from mengxr/release-0.9.2

add links for spark v0.9.2 release
Adding links for Spark v1.0.2 release
Merge pull request #63 from tdas/v3

Adding links for Spark v1.0.2 release
check whether file/directory exists
Merge pull request #64 from mengxr/copy-dir

check whether file/directory exists in copy-dir
Merge branch 'v3' of https://github.com/mesos/spark-ec2 into v3