Unhelpful error when running sfn from homedir

[mconigliaro]

This confused me until I realized I was in the wrong directory:

$ sfn create test -f sparkleformation/test.rb
ERROR: NameError: undefined local variable or method `default' for #<#<Class:0x007fd54c04c468>:0x007fd54e9e9320>

[chrisroberts]

I've mulled over removing cwd from an allowed default search directory for sparkleformation files. That would properly "fix" this error, and prevent crazy loads when in a "root"-ish directory (like within home directory) or even at root.

TODO: Remove . from allowed defaults. Only allow when explicitly defined via config.