New setup script
New setup script

- No longer installs numpy and scipy because they are preinstalled on
the current Spark AMI
- Set paths and aliases for Thunder
- Create Thunder egg and set a path for it

poolio/thunder,kunallillaney/thunder,kcompher/thunder,j-friedrich/thunder,thunder-project/thunder,poolio/thunder,broxtronix/thunder,jwittenbach/thunder,kunallillaney/thunder,zhwa/thunder,mikarubi/thunder,pearsonlab/thunder,mikarubi/thunder,oliverhuangchao/thunder,zhwa/thunder,j-friedrich/thunder,oliverhuangchao/thunder,kcompher/thunder,pearsonlab/thunder,broxtronix/thunder