update README.md
update README.md
add edit post function
add delete function to posts
add multi-line formatting to posts
add ajax js to edit function on posts
add ajax delete to posts
refactor style for _post into SCSS
add ajax to new post function
make posts count change when posts are edited or deleted
fix behavior of posting when on another user's profile page
revise styling on posts
add user mention feature and name formatting
style the profiles
add user info link