Fix error handling

- Modify error handling of a wrong Room value
-- The process exits on error
-- Better error message is provided
Fix typo
Merge pull request #1 from YasuhiroYoshida/bugfix-error-handling

Bugfix error handling
bumped version to 0.0.3
supported git-pr-release
Merge pull request #2 from akiomik/develop

bumped version to 0.0.3
move github repository to nulab
Update badges url
Update author
Update LICENSE
Remove .git-pr-release
Remove gemnasium badge
Support Typetalk Streaming API
Remove unused environment variable HUBOT_TYPETALK_API_RATE
update developer site URL to new one
Bump version to 0.1.0
added a service link to README
Merge pull request #3 from akiomik/feature/add-service-link

added a service link to README
Add a notification setting
Test for travis setting