Skip generated files

[roskakori]

Goal: generated files are excluded from the analysis.

In order to detect generated files, a logic similar to sloccount can be used:

Detecting automatically generated files is not easy, and it's quite conceivable that it won't detect some automatically generated files. The first 15 lines are examined, to determine if any of them include at the beginning of the line (after spaces and possible comment markers) one of the following phrases (ignoring upper and lower case distinctions): generated automatically'',automatically generated'', this is a generated file'',generated with the (something) utility'', or ``do not edit''.

Source: http://www.dwheeler.com/sloccount/sloccount.html, section "Designer's notes".

[roskakori]

Implemented with v0.5.