Missed a few minor doc details
The runnow command supports a plugin argument
Python 2.6 format woops
Update plugin command to support test range
Merge branch 'runnow-certain-plugin' into develop
Add example of using the --plugin option
Merge branch 'plugin-run-one-test' into develop

Conflicts:
	src/jig/commands/plugin.py
Update docs and plugin test usage
Fix Python 2.6 string format incompatability
Bump version and update release notes
Merge branch 'release-0.1.5'