when I did data binding using ng-model the following error occurs
here i want to print string contained in the input tag to h2 tag.

```
Uncaught Error: Template parse errors:
Can't bind to 'ng-model' since it isn't a known property of 'input'. ("
<div>
    <label>name:
      <input [ERROR ->]ng-model="{{hero.name}}" placeholder="name">
    </label>
</div>"): ng:///AppModule/HeroesComponent.html@16:13
    at syntaxError (compiler.js:466)
    at TemplateParser.parse (compiler.js:24312)
    at JitCompiler._parseTemplate (compiler.js:33699)
    at JitCompiler._compileTemplate (compiler.js:33674)
    at eval (compiler.js:33576)
    at Set.forEach (<anonymous>)
    at JitCompiler._compileComponents (compiler.js:33576)
    at eval (compiler.js:33446)
    at Object.then (compiler.js:455)
    at JitCompiler._compileModuleAndComponents (compiler.js:33445)

```