Forcibly unbox Float object if necessary

This is a slightly less hacky hack around
http://code.google.com/p/libgdx/issues/detail?id=1640
Add 'dev' profile for GWT draft mode

http://rombertw.wordpress.com/2011/03/05/maven-recipe-gwt-development-profile/
Add more details to the generated README.md
Build both desktop and html during archetype IT

This also cleans up the archetype build a bit.
Switch to double quotes
Separate GWT module for dev mode

http://rombertw.wordpress.com/2011/03/05/maven-recipe-gwt-development-profile/