use options.detail to log path and filename

[barsh]

The following messages don't quite cut it:

[11:28:07] gulp-inject 2 files into index.html
[11:28:07] gulp-inject 2 files into index.html

This is better:

[11:28:07] gulp-inject 2 files into folder1/index.html
[11:28:07] gulp-inject 2 files into folder2/index.html

[caseyWebb]

👍

[joakimbeng]

Nice!
Wouldn't it make more sense if this was the default and not hidden behind a flag?