Merge pull request #4 from arkfang/master

设计文档
Merge pull request #5 from arkfang/master

项目程序
mv src to top level
modify *.java
modify *.java
modify *.java
Merge branch 'master' of github.com:arkfang/hadoop-map-reduce-ex

Conflicts:
	ods2/mr/src/main/java/com/anjuke/corp/ods/alog/RefererTest.java