Hit an http endpoint and place the result in extensions
Example SimpleHTTPGetProcessor configuration:
"http": { "protocol": "http", "hostname": "urls.api.twitter.com", "port": 9300, "resourceUri": "1/urls/count.json" }
Example SimpleHTTPPostPersistWriter configuration:
"http": { "protocol": "http", "hostname": "localhost", "port": 7474, "resourceUri": "db/data/cypher" }