Colorise script output using Colorama

[c-rhodes]

We should prettify the output of the yt_happy_or_sad.py script using Colorama. If the verdict is sad then the output should be red, if the verdict is happy the output should be green.

Colorama should be added as a dependency to the requirements.txt file. After installing Colorama you can get the version using pip:

$ pip freeze | grep colorama

The output from this command can be appended to the requirements.txt like so:

$ pip freeze | grep colorama >> requirements.txt