Release 0.8.1

This includes all changes from prometheus/haproxy_exporter 0.8.0

Release v0.8.0

- First release of appscode fork
- Supports Haproxy running in any namespace via Voyager.

v0.7.1 / 2016-10-12

- [BUGFIX] Fix timeout behavior when reusing HTTP connections
- [BUGFIX] Remove usage of undocumented golang type assertion behavior

0.7.0

- [FEATURE] Add support for unix sockets. Thanks @alicebob

0.6.0 / 2016-05-13

- [CHANGE] Use new build process, changes the structure of the tarball.
- [FIX] Abort on non-200 status code from HAProxy.
- [ENHANCEMENT] Add -version flag and version metric.
- [ENHANCEMENT] Add chkfail and downtime server metrics.
- [ENHANCEMENT] Remove locks and unnecessary channel communication.

0.5.2

- [FIX] Limit graceful CSV error handling to parse errors

0.5.1

- [FIX] Handle invalid CSV lines gracefully

0.5.0

* [CHANGE] New Dockerfile
* [ENHANCEMENT] Export haproxy_check_duration_milliseconds
* [ENHANCEMENT] Export haproxy_limit_sessions
* [ENHANCEMENT] Export haproxy_limit_session_rate
* [ENHANCEMENT] Allow complete deactivation of server metrics
* [ENHANCEMENT] Use common prometheus logging
* [FIX] Fix status field parsing of servers in MAINT status

Merge pull request prometheus#27 from ashmere/patch-1

fixing in correct docker run example in readme.md

Bump version