added code for seating algorithm
Added some thigns regarding the Party, Reservation, and WalkIn classes
Delete .README-seating-algorithm.txt.swp

Mistakenly got a .swp file in my commit.
fixed a bug in the seating-algorithm. see readme for details.
Merge branch 'master' of https://github.com/jacobszadnik/PAGR
Merge pull request #4 from jacobszadnik/master

Seating Algorithm Version 0.4.1