Fixed line-endings.
Whitespace.
Added meta-application things like Makefile, rebar and relx conf files to the binary tree application.
Added the dot app file for the binary tree application.
Ignore the buildable files.
Added the application startup module.
Fixed up the syntax error in the dotapp file.
Export all the api level functions.
Use proper defaults for the record so we can easily check for unintialized nodes.
Remove the old Right/Left/Value variables and replaced them with the State record lookups.
Walk doesn't send the client's pid anymore.
Retrieve is no longer what's used to retrieve the walk, it's just a gen_server call.
Remove compilation warnings.