Updated readme
Only one input box for expenses and income showing at a time, but I'd like to make them be at the same position and possibly slide in or something of that nature. Right now they're both there but on top of each other, so it seems a little silly I guess.
Updated CSS to move the input tags around, right now its positioned underneath the two buttons in a sort of tab type of way. It looks cool although I don't think my styling is going to translate to mobile at all (not that I'm currently worrying about that too much but its fine)
Fixed ZIndex problem where you couldn't actually enter information into the two input forms. Its not very robut right now and relys on the incomeForm being the first div in the document.getElementsByClassName list result. Might be able to make it more robust by checking the id fo the childNode, or by just calling parent on the forms themselves
Refactored input form z-index code to be more robust (using last discussed strategy from previous commit)