docs: create public API surface

Closes #1181

modules/angular2/src/change_detection/binding_propagation_config.js

@@ -2,7 +2,7 @@ import {ChangeDetector} from './interfaces';
 import {CHECK_ONCE, DETACHED, CHECK_ALWAYS} from './constants';
 
 /**
- * @publicModule angular2/angular2
+ * @publicModule angular2/change_detection
  */
 export class BindingPropagationConfig {
   _cd:ChangeDetector;

modules/angular2/src/change_detection/pipes/iterable_changes.js

@@ -26,6 +26,9 @@ export class IterableChangesFactory {
   }
 }
 
+/**
+ * @publicModule angular2/pipes
+ */
 export class IterableChanges extends Pipe {
   _collection;
   _length:int;
@@ -501,6 +504,9 @@ export class IterableChanges extends Pipe {
   }
 }
 
+/**
+ * @publicModule angular2/pipes
+ */
 export class CollectionChangeRecord  {
   currentIndex:int;
   previousIndex:int;

modules/angular2/src/change_detection/pipes/keyvalue_changes.js

@@ -3,6 +3,9 @@ import {stringify, looseIdentical, isJsObject} from 'angular2/src/facade/lang';
 
 import {NO_CHANGE, Pipe} from './pipe';
 
+/**
+ * @publicModule angular2/pipes
+ */
 export class KeyValueChangesFactory {
   supports(obj):boolean {
     return KeyValueChanges.supportsObj(obj);
@@ -13,6 +16,9 @@ export class KeyValueChangesFactory {
   }
 }
 
+/**
+ * @publicModule angular2/pipes
+ */
 export class KeyValueChanges extends Pipe {
   _records:Map;
 
@@ -349,6 +355,9 @@ export class KeyValueChanges extends Pipe {
 
 
 
+/**
+ * @publicModule angular2/pipes
+ */
 export class KVChangeRecord {
   key;
   previousValue;

modules/angular2/src/change_detection/pipes/null_pipe.js

@@ -1,6 +1,9 @@
 import {isBlank} from 'angular2/src/facade/lang';
 import {Pipe, NO_CHANGE} from './pipe';
 
+/**
+ * @publicModule angular2/pipes
+ */
 export class NullPipeFactory {
   supports(obj):boolean {
     return NullPipe.supportsObj(obj);
@@ -11,6 +14,9 @@ export class NullPipeFactory {
   }
 }
 
+/**
+ * @publicModule angular2/pipes
+ */
 export class NullPipe extends Pipe {
   called:boolean;
   constructor() {

modules/angular2/src/change_detection/pipes/pipe.js

@@ -1,5 +1,8 @@
 export var NO_CHANGE = new Object();
 
+/**
+ * @publicModule angular2/angular2
+ */
 export class Pipe {
   supports(obj):boolean {return false;}
   onDestroy() {}