I'm using isotoma.buildout.autodevelop to develop eggs which I'm currently developing within my buildout.
I would like to include these developed eggs (which are located on the filesystem next to my buildout.cfg) as namespaces in my buildout's custom interpreter. 
Can anyone provide an example of this or link to some resource ?
A) The mr.developer recipe mentioned on your recipe's page is probably a better choice. 
B) you want your eggs in bin/python? Include them in 'eggs' in your zc.recipe.eggs part in your buildout where you generate bin/python.
Including a locally developed python package in a buildout interpreter