[110] +Added initial dummy files from [102]
[110] rename files to correct ones and links on index.php
[109] *clean up teorema110.js file
[109] +adding Mathjax and putting solution.
[109] *adding files "como_usar.txt" and "descricao.txt"
[110]+add leiame.txt with metainformation.
[landing_page] *adding interactive [110-Comparando retangulos]. *small fix on como_usar.txt