最简单的项目，添加龙骨结点：
@property(sp.Skeleton)
s: sp.Skeleton = null;
就会报错！
错误堆栈：ERROR: Uncaught ReferenceError: sp is not defined, location: src/project.js:0:0
STACK:
[0]anonymous@src/project.js:75
[1]window.__require.Helloworld@src/project.js:77
[2]n@src/project.js:17
[3]t@src/project.js:23
[4]anonymous@src/project.js:25
[5]o@jsb-adapter/jsb-engine.js:1
[6]anonymous@jsb-adapter/jsb-engine.js:1
[7]downloadScript@jsb-adapter/jsb-engine.js:2376
[8]151.m.handle@src/cocos2d-jsb.js:22465
[9]o@src/cocos2d-jsb.js:23170
[10]o@src/cocos2d-jsb.js:23188
[11]o@src/cocos2d-jsb.js:23188
[12]158.c.flowIn@src/cocos2d-jsb.js:23236
[13]155.m.append@src/cocos2d-jsb.js:22924
[14]145.v.load@src/cocos2d-jsb.js:21823
[15]prepare@src/cocos2d-jsb.js:8289
[16]run@src/cocos2d-jsb.js:8299
[17]window.boot@main.js:175
[18]anonymous@main.js:192
07-09 19
21.417 18281-18349/com.dingqu.andwuziqi E/jswrapper: ScriptEngine::evalString script main.js, failed!
