To add to Skelly's Bootstrap 3 no-gutter answer above (https://stackoverflow.com/a/21282059/662883)
Add the following to prevent gutters on a row containing only one column (useful when using column-wrapping: http://getbootstrap.com/css/#grid-example-wrapping):
.row.no-gutter [class*='col-']:only-child,
.row.no-gutter [class*='col-']:only-child
{
padding-right: 0;
padding-left: 0;
}