fix(cil): output union result

Author: azu

package.json

@@ -50,6 +50,7 @@
     "babel-core": "^6.24.0",
     "babel-preset-latest": "^6.24.0",
     "clone": "^2.1.1",
-    "concat-stream": "^1.6.0"
+    "concat-stream": "^1.6.0",
+    "lodash.union": "^4.6.0"
   }
 }

src/create-textlint-rule-example.js

@@ -1,6 +1,7 @@
 // MIT © 2017 azu
 "use strict";
 const getRuleTest = require("./get-rule-test");
+const union = require("lodash.union");
 const defaultOptions = {
     prependValidExample: "**OK**:",
     prependInValidExample: "**NG**:",
@@ -25,12 +26,12 @@ module.exports = function(content, options = {}) {
 
     const validExample = `
 \`\`\`
-${plainValid.join(exampleSeparator)}
+${union(plainValid).join(exampleSeparator)}
 \`\`\`
 `;
     const invalidExample = `
 \`\`\`
-${plainInvalid.map(test => test.text).join(exampleSeparator)}
+${union(plainInvalid.map(test => test.text)).join(exampleSeparator)}
 \`\`\`
 `;