Add a project for Astyanax API code examples.
These are based on the code examples found on the project wiki pages.
The benefit of having actual compilable code examples is that
a) the sample code keeps up-to-date with API changes
b) users get full compilable sample code with all the imports etc. in-place
add a project for Astyanax API code examples
define dependency versions through variables
allow easier changing of dependency version numbers.