code: function(href) {
  		var url = extract(href)
  		var queryObj = omit(url.qs, this.config.excludeRequestParams)
  
  		var desiredUrlParams = Object.keys(queryObj).map(function(paramName) {
  			return paramName + '=' + encodeURIComponent(queryObj[paramName])
  		}).join('&')
  
  		return desiredUrlParams ? url.url + '?' + desiredUrlParams : url.url
  	}
docs: clearURL takes url string as input and remove parameters, that are
  listed in config.excludeRequestParams
  @param	{string} href
  @return {string}