Merge pull request #855 from joeworkman/feature/min-width-center

none is not a valid value for min-width

diff --cc scss/grid/_grid.scss
index 7d85883f6c869846dbbc576eb23b040685b7a0dc,1e72a75317e39af10d2fac5e2d6ddd145cfa6027..1e65c4c0e0cf5499a4d07d3779dd63966286971d
--- 1/scss/grid/_grid.scss
--- 2/scss/grid/_grid.scss
+++ b/scss/grid/_grid.scss
@@@ -70,20 -69,13 +70,20 @@@ th.column 
    padding-bottom: $column-padding-bottom;
  
    // Prevents Nested columns from double the padding
 -  .column,
 -  .columns {
 +  .column.first,
 +  .columns.first {
      padding-left: 0 !important;
 +  }
 +
 +  .column.last,
 +  .columns.last {
      padding-right: 0 !important;
 +  }
  
 +  .column,
 +  .columns {
      center {
-       min-width: none !important;
+       min-width: auto !important;
      }
    }
  }