Merge pull request #3 from proftodd/add_and_mul_some

refactor to use an aggregator function and function pointers

implement adding and multiplying multiple Rashunals

add code to generate pkg-config files when installed

Merge pull request #2 from proftodd/fun_with_windows

add some documentation

get it to build, pass tests, and run on Windows

fractions look better without the spaces

implement a copy function

add a bunch of const qualifiers

add a comparison function

change to allow Rashunal to be used in dependent projects

and use it in writing a rashunal to a string

add method to count digits in integer

update gitignore