Create a connection

{
  "connection": {
    "service": "fooCommerce",
    "externalid": "toystore123",
    "name": "Toystore, Inc.",
    "logoUrl": "http://example.com/i/foo.png",
    "linkUrl": "http://example.com/foo/"
  }
}

{
  "connection": {
    "isInternal": 0,
    "service": "fooCommerce",
    "externalid": "toystore123",
    "name": "Toystore, Inc.",
    "logoUrl": "http://example.com/i/foo.png",
    "linkUrl": "http://example.com/foo/",
    "cdate": "2017-02-02T14:56:05-06:00",
    "udate": "2017-02-02T14:56:05-06:00",
    "links": {
      "customers": "/connections/1/customers"
    },
    "id": "1"
  }
}