Update README.md

Resolves #5

Author: ExplodingCabbage

README.md

@@ -7,7 +7,10 @@ Created as a solution to http://stackoverflow.com/questions/18482976/tell-sublim
 
 Usage instructions:
 
-* Install the plugin by copying and pasting `gitignore_plugin.py` into your Packages folder. See http://stackoverflow.com/a/15652795/1709587 for manual package installation instructions. Installation via Sublime Package Control is not yet supported.
+* Install the plugin via [Package Control](https://sublime.wbond.net/) by following these steps:
+    * Press <kbd>CTRL</kbd>+<kbd>SHIFT</kbd>+<kbd>P</kbd> (<kbd>CMD</kbd>+<kbd>SHIFT</kbd>+<kbd>P</kbd> on Mac)
+    * Select "Install Package"
+    * Search for the ***Gitignored File Excluder*** and press <kbd>Enter</kbd>.
 * `sublime-gitignorer` will regularly check all your open folders for files that are ignored by Git and update your `"file_exclude_patterns"` and `"folder_exclude_patterns"` settings in Sublime to match the list of files and folders ignored by Git.
 * After you create a new Git-ignored file or update your `.gitignore` files, the files should be hidden from your project within 5 seconds.
 * Since the `"file_exclude_patterns"` and `"folder_exclude_patterns"` settings are now being managed programatically, if you want to *manually* set file or folder exclusion patterns in sublime, you can use the `"extra_file_exclude_patterns"` and `"extra_folder_exclude_patterns"` settings. Any file paths you list in here will automatically be included in your `"file_exclude_patterns"` and `"folder_exclude_patterns"` in addition to Git-ignored paths.