chore(package) freeze version of event-stream and bump httpsnippet version

Author: darrenjennings

package.json

@@ -1,5 +1,5 @@
 {
-  "version": "1.16.5",
+  "version": "1.16.6",
   "name": "httpsnippet",
   "description": "HTTP Request snippet generator for *most* languages",
   "author": "Ahmad Nassri <ahmad@mashape.com> (https://www.mashape.com/)",
@@ -80,7 +80,7 @@
     "chalk": "^1.1.1",
     "commander": "^2.9.0",
     "debug": "^2.2.0",
-    "event-stream": "^3.3.4",
+    "event-stream": "3.3.4",
     "form-data": "^1.0.0-rc3",
     "fs-readfile-promise": "^2.0.1",
     "fs-writefile-promise": "^1.0.3",