Merge pull request #150 from laurenrother/master

Update: Dependency information for dashboard installation
Clarification: Notes in assorted hiera docs that the array returned in hiera_array lookups is a flattened array of unique values.
Updated to new Google Custom Search ID code
Clarify Ruby 1.8.7 packages and consequences of installation

Per Moses, the Ruby 1.8.7 install is slightly more complicated than
originally written AND can have some consequences that were not
captured.