add subview async function;
add subview async function for subpagemanger;
add pageview async function;
modify hash trigger events;
delete default _TRANSTION_ page
add pageview common function;
add pageview recycle;

新增按需加载及pageview回收
modify test units;
modify test units;
modify test units;
modify test units;
modify test units;
modify test units;
modify test units;
add weather example
modify readme
merge [chassis for map]
Merge pull request #18 from BaiduFE/dev

sync Dev