Xcode plugins post

Proposed edits from:

> So this other [post](http://www.blackdogfoundry.com/blog/common-xcode4-plugin-techniques/) may be one of the best regarding the nuts and bolts of plugins. But as (almost) always, you\'ll need to find your own path to the goal, here some tips from what I found on different aspects of the development:

to:

> [Common Xcode4 Plugin Techniques](http://www.blackdogfoundry.com/blog/common-xcode4-plugin-techniques/) may be one of the best articles regarding the nuts and bolts of plugins and would serve as a great supplement to this article. But as (almost) always, you\'ll need to find your own path to the goal, here are some tips from what I have found on different aspects of plugin development: