fix(package): update csv-stringify to version 2.0.0

Author: greenkeeper[bot]

package.json

@@ -21,7 +21,7 @@
   "dependencies": {
     "colors": "^1.1.2",
     "csv-parse": "1.2.1",
-    "csv-stringify": "^1.0.4",
+    "csv-stringify": "^2.0.0",
     "express": "^4.13.4",
     "hospitalrun": "1.0.0-beta",
     "hospitalrun-dblisteners": "1.0.0-beta",