added failing spec to show how both symbol and string keys are causing problems
converted has many to use string key for association, makeing it compatable with has_one; fixed tests that relied on symbol keys for has_many associations
Merge pull request #660 from kbullaughey/standardize_has_one_and_has_many_on_string_roots

Standardize has one and has many on string roots
Attempt to port Roadtrippes `:profile` option to AM:S 0.9.