[feature] added demos for Placeholder Text, Loading Spinner and Standard Buttons
Merge pull request #10 from Rise-Vision/feature/standardized-component-demos

[feature] added demos for Placeholder Text, Loading Spinner and Standard...
Added column-selector demo and removed column-setting
Merge pull request #11 from alex-deaconu/master

Added column-selector demo and removed column-setting
Added missed reference to column-selector
Merge pull request #12 from alex-deaconu/master

Added missed reference to column-selector
[feature] integrated Spreadsheet Controls demo
Merge pull request #13 from Rise-Vision/feature/component-google-spreadsheet-controls-demo

[feature] integrated Spreadsheet Controls demo
[feature] integrated demo for url-field
Merge pull request #14 from Rise-Vision/feature/url-field-demo

[feature] integrated demo for url-field
[feature] integrated demo for google drive picker
Merge pull request #15 from Rise-Vision/feature/google-drive-picker-demo

[feature] integrated demo for google drive picker
[chore] added mock data for spreadsheet controls component
Merge pull request #16 from Rise-Vision/chore/add-mock-data-for-spreadsheet

[chore] added mock data for spreadsheet controls component