start 0.7
update read me and project description for 0.7
simple doc for app (0.7.x)
app draft for 0.7
Add description about delegation
'Private' member
minor changes
Add "Klass" and test
Klass doc
Add description about "init" property
Klass: allow override superclass's constructor function
new app implementation and documentation
removed the static properties feature
assign __proto__ before argument the prototype itself
Doc, test and implementation for "App"
Doc for Router
Update App doc
new Router and test
Add "hook" function - allow add router level
hooks. 
Simplified implementation of the hook system.
remove unused "parentType"
Add "listen" function, handle server request event
directly.