final edits to spark stuff
in unit9
one more small addition to spark stuff in unit9
First try
Small improvements
More refactoring
Fix name
A few more examples
Merge branch 'master' of github.com:berkeley-stat243/stat243-fall-2014

* 'master' of github.com:berkeley-stat243/stat243-fall-2014:
  one more small addition to spark stuff in unit9
Final touches
added AWS, EC2, and Spark
instructions in the howtos folder
Merge branch 'master' of https://github.com/berkeley-stat243/stat243-fall-2014
minor edit to EC2 vm instructions
added ps6
Add example code for q6.
Merge branch 'master' of github.com:berkeley-stat243/stat243-fall-2014

* 'master' of github.com:berkeley-stat243/stat243-fall-2014:
  added ps6
  minor edit to EC2 vm instructions
  added AWS, EC2, and Spark instructions in the howtos folder
updated howtos for EC2/spark
Merge branch 'master' of https://github.com/berkeley-stat243/stat243-fall-2014
updated EC2 instructions to say to use m3.xlarge
updated ps6 with hint
Cleanup