fix #212, drop messages from zombie tasks
fix AppMasterStarter construct on RecoverApplication
fix wordcount jar path
Merge pull request #228 from manuzhang/fix_app_master_starter_construct

fix AppMasterStarter construct on RecoverApplication
Merge pull request #224 from clockfly/drop_zombie_message

#212, drop messages from zombie tasks
Add description for SOL
229, add a default cluster config "gear.conf"
Merge pull request #231 from clockfly/cluster_conf

#229 Add default cluster conf
fix #230 Executor fails to connect with AppMaster
Merge pull request #235 from clockfly/localmode_fix3

#230 Executor fails to connect with AppMaster
fix #208 allow a app to run forever
[Doc] create code of commit submission
Delete CodeOfCommits
Create CodeOfCommit.md
Merge pull request #236 from clockfly/general_app_submission

fix #208 allow a app to run forever
Update CodeOfCommit.md
fix #226 shut down application when allocated resource is not enough and minor bug fix
Merge pull request #227 from huafengw/resource

add error log when allocated resource is not enough to launch all tasks #226