Change description of gem

Signed-off-by: Gustavo Toshi Komura <gustavo.toshi.k@gmail.com>
Update README with way to install by yourself and links

Signed-off-by: Gustavo Toshi Komura <gustavo.toshi.k@gmail.com>
Module gemtranslatetoenglish

Signed-off-by: Gustavo Toshi Komura <gustavo.toshi.k@gmail.com>