Modules get names converted to use underscores instead of dashes

[danielcompton]

Steps to reproduce:

1. Create a new test project lein new naming-dash-check
2. Open it at the command line with idea . while in the new directory
3. Observe the naming of modules in the project

Expected results:

Module name matched name in project.clj, i.e. naming-dash-check

Actual results:

Module name has been converted to use underscores: naming_dash_check.