User can signup, login and post/comment/upvote/downvote on feed
Build the projet and run sr/main/NewsFeed.java
Instructions are below to run queries:
signup{tilde}name
login{tilde}name
post{tilde}post_content
reply{tilde}feed_id{tilde}comment
upvote{tilde}feed_id
downvote{tilde}feed_id
shownewsfeed
Feel free to add more functionality.