Simple fixes for logging:
1. Change LOG to private final static in BlockHandlerLocal class.
2. Change access to LOG via static object instead of via instance variable.
3. Fix extra space in logging message.
Merge pull request #458 from hsaputra/smallfixes_logging

Simple cleanups for Tachyon logging.
The section Dependency Information was misleading and I thought I'd have to have the dependency to build the master.
You can build tachyon but the information is rather meant for application development with Tachyon.
Merge pull request #459 from jaoki/bit-better-main-readme

Trivial Doc change for Dependency Information in README.md.