Renamed prototype.py to tw_api, changed name in all dependent files
Renamed tweetfiles dir to json, changed name in seed.py
Add to make_feed_file function in order to sort files into directories under {username}

 -os library imported
 -create dirs under {username} if not already in existence
 -optional param 'friend' set to default value 'self' when creating a file for the specified user
 -WIP: will pass friend parameter in the form of a user id when creating files for user's friends
Fixed bug in seed.py that filled all files with my tweets.

Accidentally got feed from my own username (as part of test) over and over when creating friend files.
Fixed the bug by refactoring function and creating if-else logic. If friend == self, run function on user. Else, run function on friend's username.
Created 2 test files from truncated list of my friends.