update i18next links in examples
add CHANGELOG file

add CHANGELOG.md file
update Gruntfile.js

- Gruntfile.js now uses newer versions of some grunt tasks
- renamed `grunt server` to `grunt serve`
- updated `package.json`
added dependencies in `bower.json`

- added some `dependencies` in `bower.json`
- removed some items from `devDependencies`
- added and removed items from `ignore`
split links to ng-i18next.js in examples

- split links to ng-i18next.js in examples
refactor unit test
refactor `provider.js`; check whether config has changed;
add i18nextCloak example
update CHANGELOG to version 0.3.0
add entry to `.gitignore`

add entry to `.gitignore` to ignore log files