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
shut down application when allocated resource is not enough and minor bug fix