1. Use add-in wizard to set up add-in
2. Edit .py file in install/ to your liking
3. Run makeaddin.py
4. Double-click the .esriaddin file to install
This should be in the doc, in a nutshell. Simple.
How will this be deployed when 10.1 goes to release, same way, in that it will be a separate download, or will it be included in the install path for desktop.
The Python Add-In Wizard will be deployed as a separate download when ArcGIS 10.1 goes to final release. The ArcGIS Desktop help will provide links to the location of the download.
ArcGIS 10.1 Beta 1 users can down the Python Add-In Wizard from this location:
https://betacommunity.esri.com/files/download.aspx/addin_assistant.zip?d=89348D98298E4EB0B88DC3CB1E0...
Beta 1 users, please refer the Guide Book for Customizing ArcGIS Desktop with Python Add-Ins for help on getting started.
http://resourcesbeta.esri.com/en/help/main/10.1/index.html#/What_is_a_Python_add_in/014p000000250000...