Reorganize a bit the document and fix some typos
Reorganize a bit the document and fix some typos

git-svn-id: https://svn.apache.org/repos/asf/jmeter/trunk@1663176 13f79535-47bb-0310-9956-ffa450edef68

Former-commit-id: 38928520287a3e36430591d589b0d6fd89bbb15d
apache/jmeter,ham1/jmeter,etnetera/jmeter,ham1/jmeter,benbenw/jmeter,etnetera/jmeter,ham1/jmeter,etnetera/jmeter,ham1/jmeter,ham1/jmeter,benbenw/jmeter,apache/jmeter,etnetera/jmeter,apache/jmeter,apache/jmeter,benbenw/jmeter,benbenw/jmeter,apache/jmeter,etnetera/jmeter