added convenience import ast.literal_eval
adds ability to use [(0,0,0),(1,1,1)....] and generate vert data
several changes have gone unbumped
more convenience for what is coming
didn't intend to commit to this branch
Merge branch 'refactor' of https://github.com/nortikin/sverchok into refactor

Conflicts:
	.gitignore
Merge pull request #276 from nortikin/refactor

Sync some updates