[Myfaces Wiki] Update of "FAQ" by MikeKienenberger

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The following page has been changed by MikeKienenberger:
http://wiki.apache.org/myfaces/FAQ

The comment on the change is:
Added createValueBinding("#{neededBean}").getValue example

------------------------------------------------------------------------------
  {{{
  FacesContext facesContext = FacesContext.getCurrentInstance();
  NeededBean neededBean
-     = (NeededBean) facesContext.getApplication().getVariableResolver()
+     = (NeededBean) facesContext.getApplication()
-       .resolveVariable(facesContext, "neededBean");
+       .getVariableResolver().resolveVariable(facesContext, "neededBean");
+ }}}
+ Alternately, you can use this code to evaluate any JSF EL expression.
+ {{{
+ FacesContext facesContext = FacesContext.getCurrentInstance();
+ NeededBean neededBean
+     = (NeededBean)facesContext.getApplication()
+       .createValueBinding("#{neededBean}").getValue(facesContext);
  }}}