Added DataServer and MasterLogWriter tests, fixed up some AssertEquals expected/actual ordering
1. Complete high level description for all classes. 2. Move Logger_Type from CommonConf to Constants.
Merge pull request #21 from calvinjia/master

More Unit Tests
Merge branch 'master' of github.com:amplab/tachyon
Code format, more comments.
format test code.
1. add more unit tests to tachyon.client.TachyonClient 2. add unit tests for tachyon.client.RawTable 3. fix a semantics bug caused by thrift bug.
add src/test/java/tachyon/client/RawTableTest.java, forget to add in the last commit.
1. unit test for RawColumn. 2. Format the code.
Specified a maven compiler plugin version and a java version.
Merge pull request #22 from markhamstra/JavaVersion

Specified a maven compiler plugin version and a java version.
1. upgrade maven-compile-plugin version. 2. add more info to README.md
add s3 an underlayer fs option.
init mUri for hadoop FS impl.
allow rawtable to update its metadata, with unit tests.
1. log metadata change for rawtable. 2. make getRawTableMetadata return a writable buffer.
bug fix for masterlogreader, add equal impl to Pair.
UI works no matter where the cmd is exec.
Merge branch 'master' of https://github.com/amplab/tachyon
1. masterlogwrite provide option to not flush. 2. preliminary version for client side metacache. 3. more tests.