Merge branch 'buildbot-nightly' into v2.1
Format and fix CLTools/README.md
Adds button to make CLTools module fail if $? != 0

This option supersedes 'return_code' which does not appear in the wizard
anyway.

It is on by default for new tools.
Markup
BuildBot FQDN
Updates notes
Merge branch 'buildbot-nightly-2.1' into 'v2.1'
Updates paths in dist/README.md
Merge pull request #958 from VisTrails/cltools-check-exitcode

This looks ok. return_code is for the uncommon case where you want to use non-zero exit code. It is not in the wizard because the interface get easily cluttered when adding too many options.
Merge branch 'buildbot-nightly-2.1' into 'v2.1'
Revert "Updates paths in dist/README.md"

This reverts commit ab88b33eb1e3e19b18a0f80c74d7144eacb5e57f.
Fixes typo in CLTools tests
Merge branch 'v2.1' into 'master'