mygit - Attempting to make git in C++

To use/test the git functions:

1. Create a temporary folder to avoid damaging the local copy of the repo's .git folder:

mkdir -p /tmp/testing && cd /tmp/testing

2. Create an alias to the mygit.sh script to use it:

alias mygit=~/path/to/repo/mygit.sh

3. Test out the commands using mygit:

mygit hash-object -w text.txt