Update Pixie plugin ID to match Grafana naming conventions. (#11)

Author: nserrino

README.md

@@ -12,7 +12,7 @@ This plugin allows Grafana users to use Pixie as a datasource in their Grafana d
 
 Grafana comes with a command line tool that can be used to install plugins.
 
-1. Run this command: `grafana-cli plugins install pixie-datasource`
+1. Run this command: `grafana-cli plugins install pixie-pixie-datasource`
 2. Restart the Grafana server. 
 3. With Grafana open, from the left vertical menu choose "Configuration" > "Data Sources." Select the "Add data source" button. Search for "Pixie Grafana Datasource Plugin" and press the "Select" button. The Pixie Plugin requires a Pixie API Key and Cluster ID to execute queries. To create an API Key, follow the directions [here](https://docs.pixielabs.ai/using-pixie/api-quick-start/#get-an-api-token). To find your cluster's ID, follow the directions [here](https://docs.pixielabs.ai/using-pixie/api-quick-start/#get-a-cluster-id). Finally, select the "Save & Test" button.
 

package.json

@@ -1,5 +1,5 @@
 {
-  "name": "pixie-datasource",
+  "name": "pixie-pixie-datasource",
   "version": "0.0.1",
   "description": "Pixie's Grafana Datasource Plugin",
   "scripts": {

src/plugin.json

@@ -2,10 +2,10 @@
   "$schema": "https://raw.githubusercontent.com/grafana/grafana/master/docs/sources/developers/plugins/plugin.schema.json",
   "type": "datasource",
   "name": "Pixie Grafana Datasource Plugin",
-  "id": "pixie-datasource",
+  "id": "pixie-pixie-datasource",
   "metrics": true,
   "backend": true,
-  "executable": "gpx-pixie-datasource-plugin",
+  "executable": "gpx-pixie-pixie-datasource-plugin",
   "info": {
     "description": "Pixie's Grafana Datasource Plugin",
     "author": {