chore: Add conf to example spells

zeppelin-examples/zeppelin-example-spell-echo/zeppelin-example-spell-echo.json

@@ -17,10 +17,18 @@
 {
   "type" : "SPELL",
   "name" : "echo-spell",
+  "version": "local",
   "description" : "Return just what receive (example)",
   "artifact" : "./zeppelin-examples/zeppelin-example-spell-echo",
   "license" : "Apache-2.0",
   "icon" : "<i class='fa fa-repeat'></i>",
+  "config": {
+    "repeat": {
+      "type": "number",
+      "description": "How many times to repeat",
+      "defaultValue": 1
+    }
+  },
   "spell": {
     "magic": "%echo",
     "usage": "%echo <TEXT>"

zeppelin-examples/zeppelin-example-spell-flowchart/zeppelin-example-spell-flowchart.json

@@ -17,6 +17,7 @@
 {
   "type" : "SPELL",
   "name" : "flowchart-spell",
+  "version": "local",
   "description" : "Draw flowchart using http://flowchart.js.org (example)",
   "artifact" : "./zeppelin-examples/zeppelin-example-spell-flowchart",
   "license" : "Apache-2.0",

zeppelin-examples/zeppelin-example-spell-markdown/zeppelin-example-spell-markdown.json

@@ -17,6 +17,7 @@
 {
   "type" : "SPELL",
   "name" : "markdown-spell",
+  "version": "local",
   "description" : "Parse markdown using https://github.com/evilstreak/markdown-js (example)",
   "artifact" : "./zeppelin-examples/zeppelin-example-spell-markdown",
   "license" : "Apache-2.0",

zeppelin-examples/zeppelin-example-spell-translator/zeppelin-example-spell-translator.json

@@ -17,10 +17,18 @@
 {
   "type" : "SPELL",
   "name" : "translator-spell",
+  "version": "local",
   "description" : "Translate langauges using Google API (examaple)",
   "artifact" : "./zeppelin-examples/zeppelin-example-spell-translator",
   "license" : "Apache-2.0",
   "icon" : "<i class='fa fa-globe '></i>",
+  "config": {
+    "access-token": {
+      "type": "string",
+      "description": "access token for Google Translation API",
+      "defaultValue": "EXAMPLE-TOKEN"
+    }
+  },
   "spell": {
     "magic": "%translator",
     "usage": "%translator <source>-<target> <access-key> <TEXT>"