Refactor core/social.less

&.photo -> .photo and .btn -> button
Refactor ios/smartphones.less

&.photo and .btn -> .photo and button
Update index.html

Add .btn in .photo step
Refactor core/social.less

&.share -> .share
Update index.html

Add .btn in .share step
Update core/social.less

Add &.help step
Update index.html

Add .help step
Update ios/smartphones.less

Adjust #prog .page-title margin
Update core/sections.less

Add Programação section
Update index.html

Add info description in #prog section
v0.1.41