Adding utilities for working with AWS and mrjob
Adding work on weather EMR and mrjob
Merge branch 'master' of https://github.com/yoavfreund/UCSD_BigData

Conflicts:
	notebooks/weather.mapreduce/weather_MRjob.ipynb
Adding utilities to make using EMR easier.
Linking to new AMI (ERM_Utils)
nk#	.ipynb_checkpoints/
merging
Merge branch 'master' of https://github.com/yoavfreund/UCSD_BigData
committing changes related to making keypair management more robust.
structured AWS_keypairm_management as a class
 Getting ready for configuration class.
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