(Maintenance) Change file as test exercise

Prior to this commit, I had never followed the Puppet Labs commit style.
This commit demonstrates my understanding of how to be a good community member.
(#3) add text to file

Prior to this commit, there was informative text in this file. This commit adds imperative text to the existing text.
Merge pull request #29 from melissaanne/bug/master/customize_file3

(#3) add text to file
Merge pull request #30 from hogepodge/bug/master/customize_file1

(Maintenance) Change file as test exercise