Merge pull request #13 from qingpeng/2014

add s3, snapshot tutorial
Merge pull request #14 from qingpeng/2014

minor fix and amazon index
Merge pull request #15 from qingpeng/2014

minor fix
Merge pull request #16 from qingpeng/2014

add reference amzon
Added PDF from Meg
CHC RNAseq tutorial monday AM
modified index for tutorials
added my pdf
fixed?
possible different device id for volume