Description
https://en.wikipedia.org/wiki/L-system
Requests
Sierpinski triangle
http://localhost:3000/?gen=6&alg=sier
Fractal tree
http://localhost:3000/?gen=9&alg=ftree
Koch curve
http://localhost:3000/?gen=5&alg=koch
Dragon curve
http://localhost:3000/?gen=15&alg=dragon