Some refactoring
Merge pull request #10 from mbehrendt/refactoring

Some refactoring
Add cb-plugin
Move chuk-cb to plugin
Change scope of repl object to solve travis build problem
Change name of repl object to solve travis build problem
Move scope of import to solve travis build problem
Fix some lint errors
Make scope of repl object in tests global again
Add travis build status
Bump version number
Use relative links to make sure they work on github and npm
Added REPL history tracking and loading
Merge pull request #12 from mbehrendt/repl-history

Added REPL history tracking and loading
Write to tmp folder when testing history write
Mock fs for history test
Use temp dir instead of mocking fs
Use temp dir also on custom history file
Cleanup
Bump version number