This attempts to address hanging requests when fancyindex is
combined with ngx_pagespeed. The change makes fancyindex check
the return value of ngx_http_send_header in a way that is just
the same as nginx's autoindex module - which makes the modules
work for me when I test with ngx_pagespeed.

Fix hang when combining fancyindex with ngx_pagespeed

Add title attribute for each dir or file

This directive enables someone using a custom header to disable the output of the indexed directory by the module

Useful when you want to create links to previous directories via PHP for example

Add the 'show_path' configuration directive

Support to be built as dynamic module

Travis-CI better signifies the build status, as it tries building with
combinations of compilers, nginx versions, and dynamic vs. statically
linked modules.