Update guide

Author: soimkim

README.md

@@ -31,7 +31,7 @@ In this user guide, you can see how to install the FOSSLight Dependency Scanner
 </thead>
 <tbody>
   <tr>
-    <td rowspan="2">Javascript</td>
+    <td rowspan="3">Javascript</td>
     <td>Npm</td>
     <td>package.json</td>
     <td>O</td>
@@ -44,6 +44,13 @@ In this user guide, you can see how to install the FOSSLight Dependency Scanner
     <td>O</td>
     <td>O</td>
     <td>O</td>
+  </tr>
+    <tr>
+    <td>Yarn</td>
+    <td>package.json</td>
+    <td>O</td>
+    <td>O</td>
+    <td>O</td>
   </tr>
   <tr>
     <td rowspan="2">Java</td>

src/fosslight_dependency/_help.py

@@ -16,6 +16,7 @@
         Maven (Java)
         NPM (Node.js)
         PNPM (Node.js)
+        Yarn (Node.js)
         PIP (Python)
         Pub (Dart with flutter)
         Cocoapods (Swift/Obj-C)