Merge pull request #58 from axel22/master

Add `Gen.rename` combinator.
Merge pull request #59 from axel22/master

Fixing gens and adding test.
Update Build.scala
use scala-idiomatic JFreeChart wrapper

scala-chart is a scala-idiomatic wrapper around JFreeChart. This is an
initial commit to use it in scalameter. I hope this will improve working
with charts. Let me know if you are interested in this and in more. Next
commit would be about more idiomatic dataset creation.
XYLine uses scala-chart for dataset
scaladoc for the do nothing chart report method
for empty history.results add series to dataset

This had been missing -- either my addition is correct or there is no
point in even creating the series -- what is it?
Merge pull request #62 from wookietreiber/wip-scala-chart

use scala-idiomatic JFreeChart wrapper
extracts ciFor function
build update to current versions
use double percent notation for scalatest dependency
scala-idiomatic CategoryDataset creation

A ToCategoryDataset converter is used to convert the
Seq[(String,(String,Double))] of the for loops for both histograms. The
rest is basically un-nesting the for loops to yield the data and dead
code elimination.
Merge pull request #63 from wookietreiber/wip-build-update

build update to the latest versions
Merge pull request #64 from wookietreiber/wip-scala-chart

further scala-chart additions
update to current snapshot
Merge branch 'wip-scala-chart-current-snapshot' of git://github.com/wookietreiber/scalameter into wookietreiber-wip-scala-chart-current-snapshot