Add log, fix log level
Fix indent and variable name
Avoid iterating Map
Merge branch 'master' of github.com:yoshitomo0912/blueprints-ramcloud-graph into yoshi

Conflicts:
	src/main/java/com/tinkerpop/blueprints/impls/ramcloud/RamCloudGraph.java
	src/main/java/com/tinkerpop/blueprints/impls/ramcloud/RamCloudIndex.java
Merge pull request #6 from y-higuchi/yoshi

Avoid Map tier