update examples

example/nodejs-commonjs/basic-resolver/README.md

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+```bash
+npm install git+https://github.com/nextapps-de/flexsearch/tree/v0.8-preview
+```
+
+```bash
+node index.js
+```

example/nodejs-commonjs/basic-resolver/index.js

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+const { Index } = require("flexsearch");
+
+// create a simple index which can store id-content-pairs
+const index = new Index({
+    tokenize: "forward"
+});
+
+// some test data
+const data = [
+    'cats abcd efgh ijkl mnop qrst uvwx cute',
+    'cats abcd efgh ijkl mnop qrst cute',
+    'cats abcd efgh ijkl dogs cute',
+    'cats abcd efgh ijkl cute',
+    'cats abcd efgh cute',
+    'cats abcd cute',
+    'cats cute'
+];
+
+// add data to the index
+data.forEach((item, id) => {
+    index.add(id, item);
+});
+
+// perform query
+const result = index.search({
+    query: "black dog or cute cat",
+    suggest: true
+});
+
+// display results
+result.forEach(i => {
+    console.log(data[i]);
+});

example/nodejs-commonjs/basic-resolver/package.json

@@ -0,0 +1,6 @@
+{
+  "name": "nodejs-commonjs-document",
+  "dependencies": {
+    "flexsearch": "github:nextapps-de/flexsearch#v0.8-preview"
+  }
+}