Merge branch 'release/0.3.2' into develop
Resolves #6 - alt location for bench sources

- Alternative location for benchmarks may now
  be configured using configuration like the following

     {:perforate {:source-paths ["src/bench/clojure"]}}

	 - Updated README
	 - Added more unit tests.
	 - Prints warning no namespaces are found, otherwise
	   prints the goals that will be perf tested.
Merge remote-tracking branch 'noahlz/issues/6/alt-bench-location' into develop
Back up project version to 0.3.3-SNAPSHOT.
Change perforate configuration key from :source-paths to :benchmark-paths.
Update project to version 0.3.3 for release.
Update README.md for 0.3.3 release.
Merge branch 'release/0.3.3'