Add requirement for typo3/cms to composer.json

Currently i try to install a complete TYPO3 System using composer.
Current I have the problem, that the composer.json from "etobi/coreapi" does not have an entry "require".
Because of this composer installs coreapi *before* typo3/cms, because of its first letter ("c" vs "t").
That's really bad, because i want to use some "pre-install-cmd" (e.g. "typo3/cli_dispatch.phpsh extbase databaseapi:databasecompare 1,2,3,4,5,7") to make some things ready.
It would be really nice, if you guys could add this piece of code into the current master.