Update inadyn.conf(5) with better example and inadyn(8) on cache files

- Improve disposition and example in inadyn.conf(5)
- Update inadyn(8) with more details on how the cache file works

Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
Bump version for release.

Signed-off-by: Joachim Nilsson <troglobit@gmail.com>