title: ElasticSearch -- use distance from point to affect query relevance
body: <p>Trying to use ElasticSearch to create a search that uses distance from a centerpoint to influence relevance.</p>
  
  <p>I don't want to simply sort on distance from a point, which I know is possible, because I want relevance based on the searched query to also affect results.</p>
  
  <p>I'd like to pass in a search string, say "coffee", and a lat/lon, say "38, -77", and get my results ordered by a combination of how related they are to "coffee" and how close they are to "38, -77".</p>
  
  <p>Thanks!</p>