Fixed a few typos.
Indicated that clusters should be started in us-east.
Updated instructions to use regular distribution of Spark/Shark via EC2
scripts.
Added table to show how to run queries.
PR Changes
Merge pull request #3 from ahirreddy/doc-updates-pr

Doc Updates
Updated Shark Directory to reflect new location of executables.
Source bash profile in each remote SSH command.
Removed Shark use Hive option.
Combined shark mem and disk code path
Added logging of results to file
Ensure slaves stopped on each trial
PR Changes
Changed local vars to lower case
Merge pull request #2 from ahirreddy/shark-testing-pr

Updated Shark Directory to reflect new location of executables.
launch hdp working
start ambari successfully
copy hosts files
set hostnames
generate keys
ambari status
download ambari private key
disable selinux
back to redhat
fixed ami
removed extraneous command
added hive options
print internal dns names