Set "downstream down" messages log at level 'info'.
Add strip-headers config, see commit msg for details.

- In the vhost section of the config, a new configuration variable has been
  added named "strip-headers". The value of which is an array of strings. These
  strings represent headers that should be stripped out of the response that the
  downstream had set.

  For example, if your downstream server sends the header "Sean: Cunningham",
  and you have the config 'strip-headers = { "Sean" }', if the Sean key exists,
  it will be removed.
Release v2.0.9, see ChangeLog for details.
Merge branch 'release/2.0.9' into develop
resume client request if pending timeout hits.
Merge branch 'develop' of github.com:ellzey/RProxy into develop
Updating the README (unfinished)
Close connection if no rules are matched.

This fixes an issue where a client can make a request for a rule that does not
exist in a vhost, and by default none of the rproxy callbacks would be called.
So if a malicious user were to post a large amount of data, this could cause a
DoS.

This sets a default callback for rules which is a catch-all that immediately
dumps the connection.
Merge branch 'develop' of github.com:ellzey/RProxy into develop
Version 2.0.10, see ChangeLog for details
Merge branch 'release/2.0.10' into develop
Added resource utilization reporting on startup