Reverse Polish Notation

Just an implementation of Material Design in a Reverse Polish Notation app. The RPN algorithm is based on Boyko Bantchev's: http://www.math.bas.bg/bantchev/place/rpn/rpn.java.html.

I'm probably not going to update this to be a full calculator. This was more of an experiment to try out Google's Material Design.

Source code is available at: https://github.com/AlexBeschler/ReversePolishNotation