DOC: Update links to the shared libraries

ldconfig fix the following error after a build:

```
$ faup
faup: error while loading shared libraries: libfaupl.so.1: cannot open shared object file: No such file or directory
```
DOC: Add FAQ

Add a question and answer to the FAQ: Why do I receive the error “libfaupl.so.1: cannot open shared object file” when trying to run faup?
Merge pull request #31 from 2xyo/master

DOC: Update links to the shared libraries