CB-2315: working out the config.xml docs for Android a bit more.
Last commit should have gone into edge, woops
CB-2316: config.xml documentation for BlackBerry.
Fix typo in formatting. Add mention of --edge arg.
[CB-2280]: Documentation for the 2 new properties.

- added doc description for 'FadeSplashScreen'
- added doc description for 'FadeSplashScreenDuration'
[CB-2407] - no more sample or www folder