Added sample JSON file to gitignore in preparation for serving files from nginx instead of S3
Added sample JSON file to gitignore in preparation for serving files from nginx instead of S3

EvanHahn/civic-json-worker,chihacknight/civic-json-worker,codeforamerica/cfapi,MaxPresman/cfapi,0111001101111010/cfapi,MaxPresman/cfapi,smalley/cfapi,EvanHahn/civic-json-worker,smalley/cfapi,0111001101111010/cfapi,codeforamerica/cfapi,smalley/cfapi,MaxPresman/cfapi,open-city/civic-json-worker