Merge pull request #464 from Microsoft/Fix#463

Fix #463: Update readme.md to include documentation about typescript_tsdk

Author: mhegazy

README.md

@@ -24,7 +24,7 @@ And on Windows:
 cd "%APPDATA%\Sublime Text 3\Packages"
 git clone --depth 1 https://github.com/Microsoft/TypeScript-Sublime-Plugin.git TypeScript
 ```
-(`--depth 1` downloads only the current version to reduce the clone size.)  
+(`--depth 1` downloads only the current version to reduce the clone size.)
 Note if you are using the portable version of Sublime Text, the location will be different.  (See http://docs.sublimetext.info/en/latest/basic_concepts.html#the-data-directory for more info).
 
 **IMPORTANT** If you already have a package called `TypeScript` installed, either remove this first, or clone this repo to a different folder, else module name resolution can break the plugin.
@@ -38,7 +38,7 @@ The plugin has identical behavior across Windows, Mac, and Linux;
 The plugin supports both ST2 and ST3. However, some features are only available in ST3:
 + Tool tips
 + Error list
-	
+
 On Windows with ST2, you may see a "plugin delay" message upon startup.  This happens because ST2 does not call "plugin_loaded()", so the TypeScript server process is started from within an event handler.
 
 Where possible, the use of a [Sublime Text 3](http://www.sublimetext.com/3) build >= 3070 is recommended, as this provides a popup API used for tool tips.
@@ -69,12 +69,12 @@ The below features are available via the keyboard shortcuts shown, or via the Co
 |Error list             | (via Command Palette) |
 
 The "format on key" feature is on by default, which formats the current line after typing `;`, `}` or `enter`.
-To disable it, go to `Preferences` -> `Package Settings` -> `TypeScript` -> `Plugin Settings - User`, and add 
+To disable it, go to `Preferences` -> `Package Settings` -> `TypeScript` -> `Plugin Settings - User`, and add
 `"typescript_auto_format": false` to the json file.
 
-For further information about the keyboard shortcuts, please refer to the [`Default.sublime-keymap`](https://github.com/Microsoft/TypeScript-Sublime-Plugin/blob/master/Default.sublime-keymap) file for common shortcuts and 
-[`Default (OSX).sublime-keymap`](https://github.com/Microsoft/TypeScript-Sublime-Plugin/blob/master/Default%20(OSX).sublime-keymap), 
-[`Default (Windows).sublime-keymap`](https://github.com/Microsoft/TypeScript-Sublime-Plugin/blob/master/Default%20(Windows).sublime-keymap), 
+For further information about the keyboard shortcuts, please refer to the [`Default.sublime-keymap`](https://github.com/Microsoft/TypeScript-Sublime-Plugin/blob/master/Default.sublime-keymap) file for common shortcuts and
+[`Default (OSX).sublime-keymap`](https://github.com/Microsoft/TypeScript-Sublime-Plugin/blob/master/Default%20(OSX).sublime-keymap),
+[`Default (Windows).sublime-keymap`](https://github.com/Microsoft/TypeScript-Sublime-Plugin/blob/master/Default%20(Windows).sublime-keymap),
 [`Default (Linux).sublime-keymap`](https://github.com/Microsoft/TypeScript-Sublime-Plugin/blob/master/Default%20(Linux).sublime-keymap)
 for OS-specific shortcuts.
 
@@ -97,7 +97,7 @@ Screenshots
 ![](https://raw.githubusercontent.com/Microsoft/TypeScript-Sublime-Plugin/master/screenshots/errorlist.gif)
 
 - Signature popup (Requires [Sublime Text 3](http://www.sublimetext.com/3) build >= 3070)
- 
+
 ![](https://raw.githubusercontent.com/Microsoft/TypeScript-Sublime-Plugin/master/screenshots/signature.gif)
 
 - Navigate to symbol
@@ -134,9 +134,18 @@ Issues are being tracked via the [GitHub Issues](https://github.com/Microsoft/Ty
 
 Note about `.tmLanguage` related issues
 --------------
-As the TypeScript and TypeScriptReact `.tmLanguage` definition files are shared across multiple editors including Sublime Text, Atom-TypeScript, and Visual Studio Code, we decided to create a dedicated repo for these files to combine the efforts for improvement. 
+As the TypeScript and TypeScriptReact `.tmLanguage` definition files are shared across multiple editors including Sublime Text, Atom-TypeScript, and Visual Studio Code, we decided to create a dedicated repo for these files to combine the efforts for improvement.
 The new repo is at https://github.com/Microsoft/TypeScript-TmLanguage, and all future tmLanguage-related issues will be tracked there and ported back to this repo.
 
+Using nightly TypeScript builds
+--------------
+The plugin can be configured to load a different TypeScript version other than the one bundled along.
+To do that, update the `Settings - User` file with the following:
+
+```JSON
+"typescript_tsdk": "<path to your folder>/node_modules/typescript/lib"
+```
+
 Tips and Known Issues
 ----
 See tips and known issues in the [wiki page](https://github.com/Microsoft/TypeScript-Sublime-Plugin/wiki/Tips-and-Known-Issues).