Merge pull request #220 from clockfly/master

Add Experiments folder
Add wizard to run benchmark test
Add explanation about why we name it as "gearpump"
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
Merge remote-tracking branch 'upstream/master'

Conflicts:
	core/src/main/java/org/apache/gearpump/transport/netty/TaskMessage.java