Master info refactor
Browse Servlet refactor
Refactor web, tests.
Use toString instead of getPath
null check
Spacing
Change naming back to path
Add unit tests for new join logic in TachyonURI.
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.
Merge pull request #457 from calvinjia/tachyon-14_6

[Tachyon-14] TachyonURI (Master/Web)
minor tweak