Various updates (#8)

* Update Grafana dashboard example.

* Upgrade Golang Prometheus client lib.

* Readme: update Grafana screenshot.

Author: anas-aso

Readme.md

@@ -43,7 +43,7 @@ Once deployed, Prometheus Targets view page should look like this :
 ![prometheus-targets-view](https://i.imgur.com/fJCun72.png "Prometheus Targets View")
 
 The Grafana dashboard below is available [here](examples/grafana_dashboard.json).
-![grafana-dashboard](https://i.imgur.com/q71BpOa.png "Grafana Dashboard")
+![grafana-dashboard](https://i.imgur.com/T00RtYk.png "Grafana Dashboard")
 
 ## Available metrics
 | Metric Name | Description |

examples/grafana_dashboard.json

@@ -5,7 +5,7 @@
       "type": "grafana",
       "id": "grafana",
       "name": "Grafana",
-      "version": "6.4.3"
+      "version": "6.6.0"
     },
     {
       "type": "panel",
@@ -37,7 +37,7 @@
   "gnetId": null,
   "graphTooltip": 0,
   "id": null,
-  "iteration": 1580398102845,
+  "iteration": 1584376540985,
   "links": [],
   "panels": [
     {
@@ -88,7 +88,7 @@
         {
           "expr": "ssllabs_grade{instance=~\"$target\"}",
           "interval": "",
-          "legendFormat": "{{ instance }}",
+          "legendFormat": "{{ instance }} [{{ grade }}]",
           "refId": "A"
         }
       ],
@@ -415,7 +415,7 @@
     }
   ],
   "refresh": "1m",
-  "schemaVersion": 20,
+  "schemaVersion": 22,
   "style": "dark",
   "tags": [],
   "templating": {
@@ -482,5 +482,5 @@
   "timezone": "",
   "title": "SSLLabs",
   "uid": "Do0wJrsWk",
-  "version": 3
+  "version": 2
 }

go.mod

@@ -4,6 +4,6 @@ go 1.13
 
 require (
 	github.com/go-kit/kit v0.10.0
-	github.com/prometheus/client_golang v1.4.0
+	github.com/prometheus/client_golang v1.5.1
 	gopkg.in/alecthomas/kingpin.v2 v2.2.6
 )

go.sum

@@ -203,8 +203,8 @@ github.com/prometheus/client_golang v0.9.1/go.mod h1:7SWBe2y4D6OKWSNQJUaRYU/AaXP
 github.com/prometheus/client_golang v0.9.3-0.20190127221311-3c4408c8b829/go.mod h1:p2iRAGwDERtqlqzRXnrOVns+ignqQo//hLXqYxZYVNs=
 github.com/prometheus/client_golang v1.0.0/go.mod h1:db9x61etRT2tGnBNRi70OPL5FsnadC4Ky3P0J6CfImo=
 github.com/prometheus/client_golang v1.3.0/go.mod h1:hJaj2vgQTGQmVCsAACORcieXFeDPbaTKGT+JTgUa3og=
-github.com/prometheus/client_golang v1.4.0 h1:YVIb/fVcOTMSqtqZWSKnHpSLBxu8DKgxq8z6RuBZwqI=
-github.com/prometheus/client_golang v1.4.0/go.mod h1:e9GMxYsXl05ICDXkRhurwBS4Q3OK1iX/F2sw+iXX5zU=
+github.com/prometheus/client_golang v1.5.1 h1:bdHYieyGlH+6OLEk2YQha8THib30KP0/yD0YH9m6xcA=
+github.com/prometheus/client_golang v1.5.1/go.mod h1:e9GMxYsXl05ICDXkRhurwBS4Q3OK1iX/F2sw+iXX5zU=
 github.com/prometheus/client_model v0.0.0-20180712105110-5c3871d89910/go.mod h1:MbSGuTsp3dbXC40dX6PRTWyKYBIrTGTE9sqQNg2J8bo=
 github.com/prometheus/client_model v0.0.0-20190115171406-56726106282f/go.mod h1:MbSGuTsp3dbXC40dX6PRTWyKYBIrTGTE9sqQNg2J8bo=
 github.com/prometheus/client_model v0.0.0-20190129233127-fd36f4220a90/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=