Fix Benchmark
Merge pull request #334 from DirectMyFile/benchmarking

Fix bench.groovy in benchmark/
GROOVY-6588 Enhance GroovyAssert for JUnit 4 Support
Merge pull request #331 from andresteingress/6588

GROOVY-6588 Enhance GroovyAssert for JUnit 4 Support
Updated README, converted to Asciidoc
Testing Guide
Merge pull request #335 from andresteingress/doc

Documentation: Testing Guide
Merge remote-tracking branch 'upstream/master' into cleanup