ENH Add AWS code from the book

Author: luispedro

ch12/README.rst

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+==========
+Chapter 12
+==========
+
+Support code for *Chapter 12: Big(ger) Data* 
+
+Data
+----
+
+This chapter relies only on the image dataset that is packaged with the
+repository at ``../SimpleImageDataset/``.
+
+Scripts
+-------
+
+jugfile.py
+ Example jugfile
+image-classification.py
+ Jugfile implementation of image classification from Chapter 10
+
+setup-aws.txt
+ Commands to setup Amazon WebServices machine
+run-jugfile.sh
+ Wrapper script to run jug file on jugfile.py
+run-image-classification.sh
+ Wrapper script to run jug file on image-classification.py

ch12/run-image-classification.sh

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+#!/usr/bin/env bash
+
+jug execute image-classification.py

ch12/run-jugfile.sh

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+#!/usr/bin/env bash
+
+jug execute
+

ch12/setup-aws.txt

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+sudo yum update
+sudo yum -y install python-devel python-pip numpy scipy python-matplotlib
+sudo yum -y install gcc-c++
+sudo yum -y install git
+sudo pip-python install -U pip
+sudo pip install scikit-learn jug mahotas
+