bump version number; add hadoop version note to document.
update script and document for developers
tune document, update readme, and version for 0.4.0
minor update
[maven-release-plugin] prepare release v0.4.0
[maven-release-plugin] prepare for next development iteration
update script
[maven-release-plugin] prepare release v0.4.0
[maven-release-plugin] prepare for next development iteration
bump version
The key word is "throw"
Merge pull request #110 from aarondav/bug

Absurdly minor: throw exception instead of looking at it
Format TFS code
Merge branch 'master' of github.com:amplab/tachyon
update document to access other release's document
Merge branch 'master' into 0.4.0-system-integration

Conflicts:
	bin/tachyon