update readme

Author: LintaoAmons

HOOK_EXAMPLES.md

@@ -0,0 +1,19 @@
+## Print hint after switch project
+
+```lua
+{
+  callback = function(_)
+    vim.cmd("Telescope find_files")
+  end,
+}
+```
+
+## Open Telescope to find files right after switch project
+
+```lua
+{
+  callback = function(_)
+    vim.cmd("Telescope find_files")
+  end,
+}
+```

README.md

@@ -38,6 +38,11 @@ return {
               vim.notify("switched to dir: " .. dir)
             end,
           },
+          {
+            callback = function(_)
+              vim.cmd("Telescope find_files")
+            end,
+          },
           {
             callback = function(dir)
               vim.notify("switched to dir: " .. dir)
@@ -56,6 +61,8 @@ return {
   }
 ```
 
+> [Hook examples](./HOOK_EXAMPLES.md)
+
 ## Commands and Apis
 
 | Command         | Description                                                 |