Fixed plugin screenshots.

src/plugin.json

@@ -16,8 +16,8 @@
     },
     "keywords": ["zabbix"],
     "logos": {
-      "small": "/img/zabbix_logo_200.png",
+      "small": "img/zabbix_logo_200.png",
-      "large": "/img/zabbix_logo_400.png"
+      "large": "img/zabbix_logo_400.png"
     },
     "links": [
       {"name": "GitHub", "url": "https://github.com/alexanderzobnin/grafana-zabbix"},
@@ -25,11 +25,11 @@
       {"name": "License", "url": "https://github.com/alexanderzobnin/grafana-zabbix/blob/master/LICENSE.md"}
     ],
     "screenshots": [
-      {"name": "Showcase", "path": "https://cloud.githubusercontent.com/assets/4932851/8269101/9e6ee67e-17a3-11e5-85de-fe9dcc2dd375.png"},
+      {"name": "Showcase", "path": "img/screenshot-showcase.png"},
-      {"name": "Dashboard", "path": "https://cloud.githubusercontent.com/assets/4932851/14539264/5ff70b58-0288-11e6-9de3-8aabe8c85e4c.png"},
+      {"name": "Dashboard", "path": "img/screenshot-dashboard01.png"},
-      {"name": "Annotations", "path": "https://cloud.githubusercontent.com/assets/4932851/14539263/5fd8abd6-0288-11e6-9c87-b960c654ab29.png"},
+      {"name": "Annotations", "path": "img/screenshot-annotations.png"},
-      {"name": "Metric Editor", "path": "https://cloud.githubusercontent.com/assets/4932851/14539267/6004cb8a-0288-11e6-9b1f-78ec54409835.png"},
+      {"name": "Metric Editor", "path": "img/screenshot-metric_editor.png"},
-      {"name": "Triggers", "path": "https://cloud.githubusercontent.com/assets/4932851/14539266/600495fc-0288-11e6-8d15-308bbef16535.png"}
+      {"name": "Triggers", "path": "img/screenshot-triggers.png"}
     ],
     "version": "3.0.0-beta7",
     "updated": "2016-04-14"