created layout for Todo app
user can add item to 'Todo List'
updated addTodo to use 'submit', restyled button
New item can be added to ToDo list for real
when adding new item, ensures something is being added
Todo items are accessed through Array
added <li> styling on buttons
rearranged button position
included Boostrap CSS link
added dynamic class name to <li>, started delete function
added document function for deleteItem