revert FindIcon search source removal

Author: jjw24

Plugins/Flow.Launcher.Plugin.WebSearch/setting.json

@@ -56,6 +56,13 @@
       "Url": "http://en.wikipedia.org/wiki/{q}",
       "Enabled": true
     },
+    {
+      "Title": "FindIcon",
+      "ActionKeyword": "findicon",
+      "IconPath": "Images\\pictures.png",
+      "Url": "http://findicons.com/search/{q}",
+      "Enabled": true
+    },
     {
       "Title": "Facebook",
       "ActionKeyword": "facebook",