(maint) Switch FileUtils to IOUtils

Prior to this commit, puppet-gatling was using FileUtils to get the file
path from the gatling-puppet-load-test data files. This worked fine on
my local test of jenkins, however when the real plugin was added to a
legacy jenkins box, the job ran on a jenkins slave. The problem with
this is that the plugin had no idea about the jenkins slave, and the
plugin thought the files were localted on the jenkins master. This
commit fixes this problem by using IOUtils and the FilePath .read()
method to figure out where the files are located.
(0.9.1) Tag puppet-gatling as 0.9.1

Update required due to previous commit
(v0.9.2-SNAPSHOT) Update master to 0.9.2-SNAPSHOT
(maint) Fix breaking error with files not being found

Prior to this commit, the plugin would fail when you had a simulation
that used more than one version of Puppet Enterprise. This commit fixes
that by looking in the location of the workspace for the stats files
rather than within the git repository for gatling-puppet-load-test.
Another change in this project was done in gatling-puppet-load-test to
make the project work. It saved the data files outside of the git repo.
Change version to 0.9.3-SNAPSHOT
(maint) Clean up comments and retag

Prior to this commit, the publisher had a lot of unused comments from
the last major code refactor, along with a few empty javadocs. This
commit removes those comments and adds some simple comments to javadocs.
(maint) Change version to 0.9.4-SNAPSHOT and cleanup

Prior to this commit, there was some general cleanup that was required.
Methods that were only used in this file were changed to private and the
javadocs were cleaned up. Also the version changed to 0.9.4-SNAPSHOT
Merge pull request #7 from briancain/master

Fix breaking error