Fixes typo

This prevented from downloading multiple files with the 'download'
command.
Updates README
Writes command output to _stdout and _stderr
Minor fixes to bash code
Adds 'set -e' all around
Makes status() return arg as unicode
Fixes warning
Route tej log messages to VisTrails 'debug' module
Test connection and automatically reconnect
Merge branch 'master' into 'vistrails'