message: Add tsconfig argument and description to README
diff: @@ -75,6 +75,8 @@ in order to change the behaviour of TypeDoc.
  Specify module code generation: "commonjs", "amd", "system" or "umd".
  * `--target <ES3, ES5, or ES6>`<br>
  Specify ECMAScript target version: "ES3" (default), "ES5" or "ES6"
  +* `--tsconfig <path/to/tsconfig.json>`<br>
  + Specify a typescript config file that should be loaded. If not specified TypeDoc will look for 'tsconfig.json' in the current directory.
  #### Theming
  * `--theme <default|minimal|path/to/theme>`<br>
  