added options to readme
added options to readme

FalconSocial/grunt-inline-css,jgallen23/grunt-inline-css,jimstringer/grunt-inline-css,wnstck/grunt-inline-css,jgallen23/grunt-inline-css,wnstck/grunt-inline-css,jimstringer/grunt-inline-css,FalconSocial/grunt-inline-css