Add tests for coverage.
Correct string replace()
updated README.md for new travis project
Move `lib/message.js` to `./index.js`.
Remove lib/message.js
Merge branch 'master' of https://github.com/yahoo/intl-messageformat into tests
Merge pull request #4 from drewfish/readme

updated README.md for new travis project
Merge branch 'master' of https://github.com/yahoo/intl-messageformat into move-index