docs(*): add @publicModule tags

Initial set of tags to demonstrate the public docs filtering

Closes #988

modules/angular2/src/core/compiler/compiler.js

@@ -21,6 +21,7 @@ import {CssProcessor} from './css_processor';
 /**
  * Cache that stores the ProtoView of the template of a component.
  * Used to prevent duplicate work and resolve cyclic dependencies.
+ * @publicModule angular2/angular2
  */
 export class CompilerCache {
   _cache:Map;
@@ -46,6 +47,7 @@ export class CompilerCache {
  * The compiler loads and translates the html templates of components into
  * nested ProtoViews. To decompose its functionality it uses
  * the CompilePipeline and the CompileSteps.
+ * @publicModule angular2/angular2
  */
 export class Compiler {
   _reader: DirectiveMetadataReader;