Adds a Portfolio custom post type to your site.
This is heavily influenced by the Jetpack Portfolio post type and is backwards compatible.
Switching from Jetpack Portfolio
If you want to switch to Toolbelt portfolio posts, from Jetpack, then you can use the tools > Toolbelt page to convert the post types.
There is also added a tool that lets you switch back in case you want to go back to Jetpack. It's your data to do with as you wish!