Implement day 11.

Whelp, this was really annoying.

2016/src/main.rs

@@ -9,6 +9,7 @@ use std::io;
 pub mod common;
 pub mod day1;
 pub mod day2;
+pub mod day11;
 pub mod day12;
 pub mod day15;
 pub mod day16;
@@ -21,6 +22,7 @@ fn get_impl(day: &str) -> Box<common::Solution> {
     match day.parse() {
         Ok(1) => { Box::new(day1::Day1::new()) }
         Ok(2) => { Box::new(day2::Day2::new()) }
+        Ok(11) => Box::new(day11::Day11::new()),
         Ok(12) => { Box::new(day12::Day12::new()) }
         Ok(15) => { Box::new(day15::Day15::new()) }
         Ok(16) => { Box::new(day16::Day16::new()) }