(maint) Add unit test for file::each_line.

Adding a unit test for facter::util::file::each_line.
Merge pull request #35 from peterhuene/maint/test

(maint) Add unit test for file::each_line.
(maint) Speed up travis builds by grabbing a pre-built cmake
Merge pull request #36 from kylog/get-prebuilt-cmake

(maint) Speed up travis builds by grabbing a pre-built cmake
(CFACT-29) Implement SELinux facts
Merge pull request #33 from adrienthebo/feature/master/cfact-29-selinux

(CFACT-29) Implement SELinux facts