1. Add "Location" command into TFSShell
2. Enable "FileInfo" command in TFSShell
3. Fix a spell mistake in TachyonFS.java
corrected the code style and remove the nnecessary thrown Expections
correct the code style:)
correct code style:)
add unit tests for locaion and fileinfo
correct code style
Merge pull request #42 from RongGu/master

 Add "Location" command into TFSShell as well as some minor fixes
Fix buf lock bug.
Merge branch 'master' of github.com:amplab/tachyon
more unit tests plus bug fix.
upgrade slf4j version
separate local and remote blockinstream
partial read.
fix block locker in data server
unit tests for different blockinstream
rename a writetype
format code.
read from remote peer
fix a ui bug
parse double worker mem setting with tests.