add parameter for proposal.
modify logger of DiskManager.
Merge branch 'master' into MAID
modify Parameter for demo.
add workload file.
Merge branch 'master' into MAID
implement put method for large size files.
Merge branch 'master' into MAID
modify MAID client.
fix write through for MAID.
modify Parameter. #3
Merge branch 'master' into MAID

Conflicts:
	src/jp/ac/titech/cs/de/ykstorage/service/Parameter.java
add log for mkdir and cannot get/put/delete.
Merge branch 'master' into MAID
add log for mkdir and cannot get/put/delete of MAID.
add putl command to Client.
Merge branch 'master' into MAID
add putl command to MAID Client.
modify SimpleClient2.
Merge branch 'master' into MAID