[REVIEW] Repo file updates.

[satyarth934]

• [ ] Inside the api dir, Update requirements.txt using the following command within your virtual env: conda env export requirements.txt Would be better to create a new virtual environment for this so that unnecessary packages are not included in the requirements.txt files.
• [ ] Check if the public dir is necessary. Remove if not.
• [ ] Update .gitignore to follow the python template.
• [ ] Get rid of unnecessary prints in the Swipe_Labeller_Demo.ipynb

--- EDIT ---

• [ ] for .gitignore use this link instead.