diff --git a/README.md b/README.md
index f74dd90..f2b1587 100644
--- a/README.md
+++ b/README.md
@@ -13,15 +13,25 @@ instead of relying on naive regular expression parsing.
 ### Find all symbols
 ![Find all symbols demo](images/documentSymbol.gif)
 
+### Column-accurate error reporting
+![Error reporting demo](images/publishDiagnostics.png)
+
+
 ## Todo
  - Autocompletion
  - Rename
  - Goto definition
  - Format document
  - Hover
+ - Signature help
  - Follow composer autoloading
 
-## Build and Run From Source
+
+## Contributing
+
+This is just the VS Code extension that spawns the actual language server. The language server itself is implemented purely in PHP [in its own repository](https://github.com/felixfbecker/php-language-server), all features need to be implemented there and all issues should be reported there.
+
+### Build and Run From Source
 Clone whole repository and in root directory execute:
 ```bash
 composer install 
@@ -31,7 +41,3 @@ code .
 ```
 The last command will open the folder in VS Code. Hit `F5` to launch an Extension Development Host with the extension.
 For working on the language server, the easiest way is to replace the language server installation from composer in `vendor/felixfbecker/language-server` with a symlink to your local clone.
-
-## Contributing
-
-This is just the VS Code extension that spawns the actual language server. The language server itself is implemented purely in PHP [in its own repository](https://github.com/felixfbecker/php-language-server).
diff --git a/images/publishDiagnostics.png b/images/publishDiagnostics.png
new file mode 100644
index 0000000..4499b70
Binary files /dev/null and b/images/publishDiagnostics.png differ
diff --git a/package.json b/package.json
index e5f0008..06d2feb 100644
--- a/package.json
+++ b/package.json
@@ -6,6 +6,7 @@
   "author": "Felix Becker <felix.b@outlook.com>",
   "license": "ISC",
   "private": true,
+  "preview": true,
   "version": "0.0.1",
   "engines": {
     "vscode": "^1.4.0"