Add in opposite_position fucntion
Merge branch 'master' of github.com:curvedmark/roole into add-in-opposite-position
allow list nodes as well
Make it camelCase
Fix minor grammar error, thanks Travis
Merge branch 'add-in-opposite-position' of git://github.com/ChinggizKhan/roole into opp

Conflicts:
	test/unit/bif.js

Change function name to opp
Handle nested list
Make nodes have filename property
Merge branch 'filename' into opp
Refactor oppositePosition bif

Rename to opp
Disallow invalid position values