updated readme.md
updated test runner.
deleted unused file.
fixed typo.
up eel to 1.6.10
emitter aop support
add demo for aop
add test-case for aop
use inherits
AspectEmitter simple implement.
added AspectEmitter spec.
code clean.
updated aspect spec & bug fixed: AspectEmitter#emit.
update AspectEmitter demo.
updated readme.
updated test runner (support android 2.3).
release 0.4.0
Merge branch 'release/0.4.0'
Merge branch 'master' of github.com:ecomfe/saber-emitter