Ignore --types and --typeRoots TypeScript compiler configuration options.

Added 'types' and 'typeRoots' to the list of strings ignored by
TypeScriptSource. This means TypeDoc will ignore these compiler
settings. This is a quick patch for TypeStrong#305 and TypeStrong#311

Author: Radagaisus

src/lib/utils/options/sources/typescript.ts

@@ -15,7 +15,7 @@ export class TypeScriptSource extends OptionsComponent
      */
     static IGNORED:string[] = [
         'out', 'version', 'help',
-        'watch', 'declaration', 'mapRoot',
+        'watch', 'declaration', 'mapRoot', 'types', 'typeRoots',
         'sourceMap', 'inlineSources', 'removeComments'
     ];