init, 2015 & 2016

2015/README.md

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+# aoc
+
+Advent Of Code solutions for 2015 using C99. Builds and runs on macOS, Linux, and OpenBSD.
+
+## Building
+
+Be sure to clone the top project with its submodules:
+
+    git clone --recurse-submodules https://git.burkey.co/eburk/aoc
+
+This project relies on several BSD extensions to the stdlib. OpenBSD and macOS users should be able to build the project out of the box. Linux users will need `libbsd` installed. The package is called `libbsd-dev` on Debian-based systems.
+
+Build the project using Cmake:
+
+    mkdir build
+    cd build
+    cmake ..
+    make
+
+The supplied `build.sh` script does the above for you.
+
+## Inputs
+
+Inputs can be generated from `get_input.sh`. You will need to get your session cookie from the Advent of Code website. The easiest way to do this is to inspect any input page in your browser.
+
+The script can then be run with `bash get_input.sh SESSIONCOOKIE`, with `SESSIONCOOKIE` replaced by your unique session cookie's hash.
+
+## Usage
+
+```bash
+./advent $DAY
+```
+
+For example, `./advent 1` will run Day 01