Credits for icons
License is free for commercial use

code tree   - By Daniel Bruce, http://danielbruce.se/
              License: http://creativecommons.org/licenses/by-sa/3.0/
find        - By NoFace, https://www.iconfinder.com/JLDesigns
tabs        - By Google, http://google.com/design/
validate    - By Google, http://google.com/design/
project     - By Github, https://octicons.github.com/
github      - By Github
console     - By Dave Gandy, http://fontawesome.io/
font        - By Dave Gandy, http://fontawesome.io/
ftp         - By Golmin Design, https://www.iconfinder.com/golmin
ftp log     - By Last Call Media Inc, https://www.iconfinder.com/mrcolinp
output      - By Kirill Kazachek https://www.iconfinder.com/kirill.kazachek
