feat(compiler): initial version of the compiler.

Supports:
- binds text nodes, element properties and directive properties
- locates decorator, component and template directives.
- inline templates of components

The compiler is built using a pipeline design,
see core/src/compiler/pipeline package.

Integration tests to show how the compiler, change_detection and DI work
together:
core/test/compiler/integration_spec.js

modules/change_detection/src/watch_group.js

@@ -1,6 +1,6 @@
 import {ProtoRecord, Record} from './record';
 import {FIELD, IMPLEMENTS, isBlank, isPresent} from 'facade/lang';
-import {AST, AccessMember, ImplicitReceiver, AstVisitor} from './parser/ast';
+import {AST, AccessMember, ImplicitReceiver, AstVisitor, Binary, LiteralPrimitive} from './parser/ast';
 
 export class ProtoWatchGroup {
   @FIELD('headRecord:ProtoRecord')
@@ -126,6 +126,17 @@ class ProtoRecordCreator {
     //do nothing
   }
 
+  // TODO: add tests for this method!
+  visitLiteralPrimitive(ast:LiteralPrimitive) {
+    // do nothing
+  }
+
+  // TODO: add tests for this method!
+  visitBinary(ast:Binary) {
+    ast.left.visit(this);
+    ast.right.visit(this);
+  }
+
   visitAccessMember(ast:AccessMember) {
     ast.receiver.visit(this);
     this.add(new ProtoRecord(this.protoWatchGroup, ast.name, null));