Merge pull request #61 from easytobook/master

Add option to not build Ui
coding style, jsdoc, additional comments
coding style + jshint fixes
added jshint check to 'grunt test' command
jsdoc
improved promises flow
coding style
improved test suite for promises flow
improvements to readme + removing of bitdeli badge
added @tested to new tested functions
commented buildUi option for later usage
0.6.0
reverted version in package.json
0.5.3
updated dependencies #62
Merge pull request #66 from stefanjudis/feature/62-update-dependencies

updated dependencies - fixes #62
Add option to export CSV