React 0.12 compatibility

[ngrash]

Current implementation fails with error:

SyntaxError: unknown: Line 1: The @jsx React.DOM pragma has been deprecated as of React 0.12

This can be resolved by removing the first line of qecode.jsx:

/** @jsx React.DOM */

[ngrash]

I seems that this only produces as warning. The failure is produced by the Rails asset pipeline in my case. Nevertheless the pragma is deprecated an should be removed.