Update pom.xml to use CDH 5.2.0

* Also changes the build version to 1.0 instead of 1.0-SNAPSHOT
  and changes the artifact ID to conform better with the documented
  example's steps.
* Dependencies now use hive-hcatalog as hcatalog has been merged with
  the hive project in CDH5 and upstream.
Add link to usage documentation.
Update packages to use new location

* Makes use of the new, merged o.a.hive.hcatalog as opposed to
  the older o.a.hcatalog package.
* Updates the HCatInputFormat call to use the newer API.