ipython/ipython — pull request #3073 by minrk (2013-03-25 00:26:06+00:00)
Title: fix ipython usage text

It does not describe current behavior, which is now like regular python.

The `[-c cmd | -m mod | file]` is taken directly from Python's own help output.

Prompted by [this question](http://stackoverflow.com/questions/15577189) on SO.