Added Markdown version of readme that includes Travis CI build status
Added Markdown version of readme that includes Travis CI build status

ptrd/jmeter-plugins,Sausageo/jmeter-plugins,Sausageo/jmeter-plugins,ptrd/jmeter-plugins,ptrd/jmeter-plugins,Sausageo/jmeter-plugins,Sausageo/jmeter-plugins,ptrd/jmeter-plugins,ptrd/jmeter-plugins,Sausageo/jmeter-plugins