Create a shell script to automate execution

[krshrimali]

It will be good to have a shell script file to automate execution including:

1. Downloading data set (if possible)
2. Creating directories
3. CMake configuration and make
4. Executing

Priority: Low

cc: @HimanshuSinghGH

[krshrimali]

Expectations from the shell script:

1. The script should be able to automate each step from making a build directory to running cmake and make commands.
2. It should be able to check the success of each step, before it proceeds to next.
3. It should also call the python utility functions mentioned in the README to create animations of images (after execution of the program is done).

A bonus addition will be:

• The script should be able to automatically download the data set (CelebA, link: https://drive.google.com/drive/folders/0B7EVK8r0v71pWEZsZE9oNnFzTm8).