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Various trivial improvements to README, add CONTRIBUTING info, and re-gen SSL example cert/key

* Improvements to README files
* Add CONTRIBUTING.md
* Regenerate example SSL certificate/key using modified commands
* Update canonical location of several submodules that have moved
* Bump lua-nginx-module for doc fixes (openresty/lua-nginx-module@7a20b0770573343c73b8397487e8f04548c17c83)
Merge pull request #8 from reedloden/trivial-improvements

Various trivial improvements to README, add CONTRIBUTING info, and re-gen SSL example cert/key
Update README to indicate that Account Service is mocked on port 9084 during mocktest
Merge pull request #10 from wkimeria/master

Update README to indicate that Account Service is mocked on port 9084
Add Statsd Logging for Login Success/Failure

Add Statsd Logging for Login Success/Failure
Add Statsd Logging for Login Success/Failure

Add Statsd Logging for Login Success/Failure
Also revert the Lua Nginx module to version prior to commit that is causing
random test failures
https://gist.github.com/wkimeria/e4d0686194e71eaefcd6
Merge branch 'master' of https://github.com/wkimeria/ngx_borderpatrol
Add Statsd Logging for Login Success/Failure

Add Statsd Logging for Login Success/Failure
Also revert the Lua Nginx module to version prior to commit that is causing
random test failures
https://gist.github.com/wkimeria/e4d0686194e71eaefcd6
Merge branch 'master' of https://github.com/wkimeria/ngx_borderpatrol
Add Statsd Logging for Login Success/Failure

Add Statsd Logging for Login Success/Failure
Also revert the Lua Nginx module to version prior to commit that is causing
random test failures
https://gist.github.com/wkimeria/e4d0686194e71eaefcd6
Merge branch 'master' of https://github.com/wkimeria/ngx_borderpatrol
Add Statsd Logging for Login Success/Failure

Add Statsd Logging for Login Success/Failure
Also revert the Lua Nginx module to version prior to commit that is causing
random test failures
https://gist.github.com/wkimeria/e4d0686194e71eaefcd6
Merge branch 'master' of https://github.com/wkimeria/ngx_borderpatrol
Add Statsd Logging for Login Success/Failure

Add Statsd Logging for Login Success/Failure
Also revert the Lua Nginx module to version prior to commit that is causing
random test failures
https://gist.github.com/wkimeria/e4d0686194e71eaefcd6
Merge branch 'master' of https://github.com/wkimeria/ngx_borderpatrol
Merge branch 'master' of https://github.com/wkimeria/ngx_borderpatrol
Merge branch 'master' of https://github.com/wkimeria/ngx_borderpatrol
Merge branch 'master' of https://github.com/wkimeria/ngx_borderpatrol
Merge branch 'master' of https://github.com/wkimeria/ngx_borderpatrol