Fallback strategy not working

[massich]

After follow the instructions and the comments in #20 I get to the following point:
1 - octoicons are not found
2 - descriptive encoding of the icons des not work

sik@Nekyia:~$ fc-list | ack -i "icons|awe"
/home/sik/.fonts/devicons-regular.ttf: icomoon:style=Regular
/home/sik/.fonts/fontawesome-regular.ttf: FontAwesome:style=Regular
/home/sik/.fonts/pomicons-regular.ttf: Pomodoro:style=Regular
sik@Nekyia:~$ echo -e "\u$CODEPOINT_OF_AWESOME_TWITTER"
\u
sik@Nekyia:~$ echo -e "\uf099"
