Clean up jsdoc comments.

- Fix formatting to improve the way how the text is rendered on
   http://apidocs.strongloop.com/loopback-boot/

 - Add `@property` entry for `options.appConfigRootDir`.

index.js

@@ -25,34 +25,38 @@ var addInstructionsToBrowserify = require('./lib/bundler');
  *
  *  3. Configures the LoopBack Application object from the `config.json` file
  *     in the application root directory. These properties can be accessed
- *     using app.get('propname').
+ *     using `app.get('propname')`.
  *
  * If the argument is an object, then it looks for `models`, `dataSources`,
- * 'config', modelRootDir, dsRootDir, appConfigRootDir and `appRootDir`
+ * 'config', `modelsRootDir`, `dsRootDir`, `appConfigRootDir` and `appRootDir`
  * properties of the object.
+ *
  * If the object has no `appRootDir` property then it sets the current working
  * directory as the application root directory.
- * The execution environment, {env}, is establised from, in order,
- *   'options.env',
- *   Process.env.NODE_ENV,
- *   the literal 'development'
+ *
+ * The execution environment, {env}, is established from, in order,
+ *  - `options.env`
+ *  - `process.env.NODE_ENV`,
+ *  - the literal `development`.
  *
  * Then it:
  *
  *  1. Creates DataSources from the `options.dataSources` object, if provided;
  *    otherwise, it searches for the files
- *      'datasources.json',
- *      'datasources.local.js' or 'datasources.local.json' (only one), 
- *      'datasources.{env}.js' or 'datasources.{env}.json' (only one)
+ *     - `datasources.json`,
+ *     - `datasources.local.js` or `datasources.local.json` (only one),
+ *     - `datasources.{env}.js` or `datasources.{env}.json` (only one)
+ *
  *    in the directory designated by 'options.dsRootDir', if present, or the
  *    application root directory. It merges the data source definitions from
  *    the files found.
  *
  *  2. Creates Models from the `options.models` object, if provided;
  *    otherwise, it searches for the files
- *      'model-config.json',
- *      'model-config.local.js' or 'model-config.local.json' (only one),
- *      'model-config.{env}.js' or 'model-config.{env}.json' (only one)
+ *     - `model-config.json`,
+ *     - `model-config.local.js` or `model-config.local.json` (only one),
+ *     - `model-config.{env}.js` or `model-config.{env}.json` (only one)
+ *
  *    in the directory designated by 'options.modelsRootDir', if present, or
  *    the application root directory. It merges the model definitions from the
  *    files found.
@@ -60,9 +64,10 @@ var addInstructionsToBrowserify = require('./lib/bundler');
  *  3. Configures the Application object from the `options.config` object,
  *    if provided;
  *    otherwise, it searches for the files
- *      'config.json',
- *      'config.local.js' or 'config.local.json' (only one),
- *      'config.{env}.js' or 'config.{env}.json' (only one)
+ *     - `config.json`,
+ *     - `config.local.js` or `config.local.json` (only one),
+ *     - `config.{env}.js` or `config.{env}.json` (only one)
+ *
  *    in the directory designated by 'options.appConfigRootDir', if present, or
  *    the application root directory. It merges the properties from the files
  *    found.
@@ -89,6 +94,8 @@ var addInstructionsToBrowserify = require('./lib/bundler');
  * @property {String} [appRootDir] Directory to use when loading JSON and
  * JavaScript files.
  * Defaults to the current directory (`process.cwd()`).
+ * @property {String} [appConfigRootDir] Directory to use when loading
+ * `config.json`. Defaults to `appRootDir`.
  * @property {Object} [models] Object containing `Model` configurations.
  * @property {Object} [dataSources] Object containing `DataSource` definitions.
  * @property {String} [modelsRootDir] Directory to use when loading