Add hyper-savetext to Hyper store (vercel#29)

* Add hyperterm-savetext to Hyper store

This updated pull request has a preview image with 1200x800 dimensions

* Update background image and plugin name

plugins.json

@@ -281,5 +281,12 @@
       "#5fb3b3"
     ],
     "dateAdded": "1524521526149"
+  },
+  {
+    "name": "hyper-savetext",
+    "description": "Save text from your Hyper terminal to a file",
+    "type": "plugin",
+    "preview": "https://raw.githubusercontent.com/neil-orans/hyper-savetext/master/screenshots/hyperstore-bg-image.png",
+    "dateAdded": "1524611024916"
   }
 ]