readme: describe all rules and add examples
readme: describe all rules and add examples

Fixes #30

MunGell/jscs-jsdoc,dtracers/jscs-jsdoc,jscs-dev/jscs-jsdoc,shaoshing/jscs-jsdoc,jdlrobson/jscs-jsdoc,lvivier/jscs-jsdoc,szarouski/jscs-jsdoc