Switch to npm installed casperjs for testing.
Remove unused .gitignore files.
Remove CasperJS from GeoExt repository.
Tag CasperJS version for testing.
Update Readme describing how to run headless tests locally.
Update .gitignore to make sure no node modules are accidentally committed.
Merge pull request #285 from bentrm/travis

Remove CasperJS from the GeoExt repository only installing it via NPM if needed.
Add example to API docs of `ignore`-config option.
Merge pull request #287 from marcjansen/better-ignore-doc

Add example to API docs of `ignore`-config option.
Add new component GeoExt.container.Overview
Add tests for component GeoExt.container.Overview
Add examples for usage of GeoExt.container.Overview
Merge pull request #288 from bentrm/overview

Simple overview container