Remove dangling quote from test description.
Merge pull request #36 from praekelt/feature/issue-36-initial-changes-for-v02

Initial version 0.2.x implementation.
Fix spelling in TaskError docstring.
Fix broken User test covered up by a missing return (thanks @hodgestar)
Fix typo in .attach() docstring.
Fix description in docstring of AppTesterTasks: s/contiguously/one after the other
Merge branch 'feature/issue-53-base-infrastructure-for-imtester-v02' of github.com:praekelt/vumi-jssandbox-toolkit into feature/issue-53-base-infrastructure-for-imtester-v02
Fix typo in .invoke() docstring.
Remove unnecessary `return self`s from tester/tasks module
Merge branch 'feature/issue-53-base-infrastructure-for-imtester-v02' of github.com:praekelt/vumi-jssandbox-toolkit into feature/issue-53-base-infrastructure-for-imtester-v02
Merge branch 'feature/issue-53-base-infrastructure-for-imtester-v02' into develop
Merge branch 'develop' into feature/issue-55-basic-apptester-interaction-task-methods