Treat `-` character correctly

[i-am-the-slime]

- seems to be a valid identifier in a swagger file. The generated Scala code should replace these in scala code or wrap the entire things in backticks.

[slavaschmidt]

We do. Play can't deal with that in t's route files.

[slavaschmidt]

Ok, may be it's possible to replace "-" with "-", but what is with other possible characters? Like ":" for example. Would be valid in swagger spec as well.