1. Open Dynamic Web Project wizard.
2. Select any JEE 6 application server (for example JBoss AS 6) as target runtime.
3. See Configuration combo box. There should be "Dynamic Web Project with CDI (Context and Dependency Injection)".

If a user selects this configuration then CDI facet will be installed as well as all required/preferred dependency: JSF 2, Java 6, Servlets 3.
As soon as JBIDE-7803 is fixed we will have a very easy way to create a web project with CDI support.