Update citation
Include logger example for custom routes
Revert "Include logger example for custom routes"

This reverts commit 5a34ac4047eb7a496b6e8cbe59da869e0f013516.
Fix health badge
fix bonus status code (should be 7) and counterbalancing criteria
added to bonus status code fix
fixed typo from earlier commit
subtle change in command docstrings to fix hit expire

docopt wasn't parsing command as expected, causing all "hit extend"
commands to extend assignments, not time. Added parentheses around
pairs of optional parameters that have to appear together to fix the
problem.

Fixed similar problem in worker list, though don't think earlier version
caused problems in this case.
fix bonusing issue

If multiple workers tried same assignment, only gets database entry for
the one who completed the hit

Conflicts:
	psiturk/psiturk_shell.py
switch to gnureadline
changing instructions to reference gnureadline
accommodating full version number (with minor changes)
update to contributors guide to mention pull requests going to dev
stepping version number
Merge remote-tracking branch 'origin/2.0.1_fixes'

Conflicts:
	psiturk/version.py
update stable version
Stop authors from getting Travis updates
Log experiment error messages
fix typo, psiTurk -> psiturk
Merge pull request #110 from pfeyz/fix-doInstructions

fix typo, psiTurk -> psiturk