Update README.md

add linux tuning example
Add support to output in BIRD prefix-list style
- documentation updated,
- Job Snijders BIRD patch corrected (style, minor errors)
- .spec updated to match upcoming version
Merge pull request #3 from job/patch-1

Update README.md - add linux tuning example.
Merge Job's README.md update
regenerated by README.md
more documentation fixes.
bugfix: allow stray spaces at the end of network definitions.
networks with leading zeros (02.51.252.0/22) can't be parsed by inet_ntop().
bugfix: -M option caused slowdown as it turned off request pipelining
Empty objects handling: explicit deny-any instead of implicit accept-any.
missing reporter added.
JSON output for as-paths
-W len option documented.
Add missing strdups in SX_PTREE_TEST context