First commit
Initial commit.
Integration lab and part of interpolation lab.
Function interface added.
Update README
Forget to mentioned @raindev. Sorry :)
Add 'numerical-methods/' from commit '6350784802f502bc2cbf166b71cc42d9c65a78f5'

git-subtree-dir: numerical-methods
git-subtree-mainline: 3ae28d98a5ad379179d718b0960bf1e478cf24e3
git-subtree-split: 6350784802f502bc2cbf166b71cc42d9c65a78f5