Clean up new Location code

Modify the grammar of some comments and spec descriptions.

Change-Id: I3ea4c82c6bb0e71372add6f451755dbf0017ec09
Reviewed-on: http://gerrit.causes.com/37224
Tested-by: jenkins <jenkins@causes.com>
Reviewed-by: Shane da Silva <shane@causes.com>
Add pkg directory to .gitignore

Now that the Bundler gem tasks have been added to the rake file, we
don't want to accidentally commit anything in the `pkg` directory.

Change-Id: Ia199ce9ae07fa56362103ad4ec40a20f72b92119
Reviewed-on: http://gerrit.causes.com/37225
Tested-by: jenkins <jenkins@causes.com>
Reviewed-by: Shane da Silva <shane@causes.com>