Hey All,
There are a number of ways to implement this and make this available when using it in a commercial product. The “Smart Config” library provided by TI is available as a Java applet, as well as Android / iOS libraries and can be sourced from them directly. It allows sending wifi credentials from a custom app under the same constraints as setting up a core. You can also configure Wifi profiles on the CC3000 from your firmware, so you can also add any kind of custom process you could want. In our case we also added an interactive setup process via Serial, but there are lots of ways to accomplish that.
In addition I’ve been toying with the idea of encouraging a firewalled ‘sensor-only’ kind of second AP people could have that the Spark would just search for and connect to automatically. You could also just have custom firmware that searched for any access point that ended in a special string, or were unprotected, etc, etc.
There is a TI Smart Config app that I use for testing as well, if you want an unbranded app. 
Thanks,
David