add data and canvas for the AMA (#213)

canvas/ama/README.md

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+This directory contains the files necessary to recreate the AMA Metrics Canvas from Elastic{ON} 2018, and includes a sample of the metrics from the conference.
+
+To use this data you need an Elastic Stack running, and Canvas installed on the Kibana node.  Check out [the Canvas install instructions](http://canvas.elastic.co/stories/installing.html) to see how to install the latest version of Canvas.
+
+## To load the data
+
+Log into Kibana, and navigate over to your DevTools.  Paste into the DevTools the contents of the `ama-responses.bulk` file, which starts like this:
+
+```json
+PUT amaresponses
+{
+  "mappings": {
+    "doc": {
+      "properties": {
+        "@timestamp": {
+			(...)
+
+POST _bulk
+{ "index" : { "_index" : "amaresponses", "_type" : "doc", "_id" : "1" } }
+{"time_spent": ["15+"], "@timestamp": "2018-02-27T01:23:53.139Z", "business_group": ["Training"], "topics": ["Kibana", "Elasticsearch", "Logstash", "APM", "Swiftype", "X-Pack"], "use_case": ["Security Analytics", "Application Search", "Site Search"]}
+{ "index" : { "_index" : "amaresponses", "_type" : "doc", "_id" : "2" } }
+{"time_spent": ["15+"], "@timestamp": "2018-02-27T01:23:53.139Z", "business_group": ["Training"], "topics": ["Kibana", "Elasticsearch", "Logstash", "APM", "Swiftype", "X-Pack"], "use_case": ["Security Analytics", "Application Search", "Site Search"]}
+
+```
+
+Select all of the text that you pasted, then hit the little play button to load the data.
+
+You can then paste in `POST /amaresponses/_search` and execute that to see that it now has data.
+
+## To load the Canvas workpad(s)
+
+There are two different canvas workpads - one (`canvas-workpad-ama-responses.json`) is the actual workpad from Elastic{ON}, while the other (`canvas-workpad-ama-responses-alt.json`) is slightly altered, handling the image repeat/fill differently.
+
+Still in Kibana, navigate to the Canvas app (it looks like a little easel).  Click on the "workpads" on the bottom, which will pop up the workpad selector.  Here we see a tip: 
+
+> Tip: Drag and drop a `JSON` exported workpad into this dialog to load new workpad from a file
+
+If you already have a workpad it will look like this: 
+
+> ![Canvas with existing workpads](images/existing-workpads.png "existing workpads")
+
+If starting from scratch, like this: 
+
+> ![From Scratch](images/no-workpads.png "From Scratch")
+
+One at a time, drag and drop the canvases onto that pane, and they will upload.  Select the new workpad and the data should appear!