Push data to google drive

[alexwolson]

Almost completely contained within the drive.py file.

Quick rundown:

• Using this requires access to the torontobids@gmail.com account I made. I can share the required token.pickle file directly to anyone who wants to test this, I suppose.
• The main method is upload_directory. This recursively creates folders and then uploads the files within them. It checks if these files and folders exist first, so it won't upload a file which is already there.
• upload_file does what it says - it also specifies the mime type of each file, for better preview on google drive.

This is tested & working on my end. Fairly straightforward implementation once I got the hang of all the oauth2 stuff.

[alexwolson]

Sonal, I addressed all of your comments in my latest commit except for the comment about a separate development folder. Thank you for your feedback! I'm learning a lot.

[sonalranjit]

Sonal, I addressed all of your comments in my latest commit except for the comment about a separate development folder. Thank you for your feedback! I'm learning a lot.

Reviewed the changes, looks awesome!