Ruby client should use lowercase file names

[adelevie]

Line 39 from BasicRubyGenerator.scala:

  // template used for models
  modelTemplateFiles += "model.mustache" -> ".rb"

EDIT: I guess the change should come from https://github.com/wordnik/swagger-codegen/blob/master/src/main/scala/com/wordnik/swagger/codegen/BasicGenerator.scala

This should ensure the first character is lowercase. I wouldn't mind trying to fix this...it would be a fun bug to squash. I just have to learn some Scala first.

Suggested fix:

1. Create BasicGenerator#modelFiles that returns an array of the model files (I have no idea what the scala appropriate data structure is here).
2. In BasicRubyGenerator, override the method, call super on it, whatever way scala lets you do this, call map on the result and lowercase all the filenames.

[fehguy]

Should be handled now--there is an override now that you can set to manipulate the filenames:

https://github.com/wordnik/swagger-codegen/blob/master/src/main/scala/com/wordnik/swagger/codegen/BasicRubyGenerator.scala#L61