Allow local font names to be missing

[dpeukert]

From what I can tell, some fonts now don't provide local font names:

http GET 'https://fonts.googleapis.com/css?family=Lora&subset=latin'

# HTTP/1.1 200 OK
# 
# @font-face {
#   font-family: 'Lora';
#   font-style: normal;
#   font-weight: 400;
#   src: url(https://fonts.gstatic.com/s/lora/v15/0QI6MX1D_JOuGQbT0gvTJPa787weuxJBkqg.ttf) format('truetype');
# }

This PR changes the logic to no longer throw an error when a local font name is missing and also adds an gitignore file.

[dpeukert]

Travis failure is unrelated (and fixed in #26).

[neverpanic]

Thanks!