Fixes #275 adds numerical class support for fluid buttons

src/elements/button.less

@@ -993,36 +993,47 @@
   display: block;
   width: 100%;
 }
+.ui.\32.buttons > .button,
 .ui.two.buttons > .button {
   width: 50%;
 }
+.ui.\33.buttons > .button,
 .ui.three.buttons > .button {
   width: 33.333%;
 }
+.ui.\34.buttons > .button,
 .ui.four.buttons > .button {
   width: 25%;
 }
+.ui.\35.buttons > .button,
 .ui.five.buttons > .button {
   width: 20%;
 }
+.ui.\36.buttons > .button,
 .ui.six.buttons > .button {
   width: 16.666%;
 }
+.ui.\37.buttons > .button,
 .ui.seven.buttons > .button {
   width: 14.285%;
 }
+.ui.\38.buttons > .button,
 .ui.eight.buttons > .button {
   width: 12.500%;
 }
+.ui.\39.buttons > .button,
 .ui.nine.buttons > .button {
   width: 11.11%;
 }
+.ui.\31\30.buttons > .button,
 .ui.ten.buttons > .button {
   width: 10%;
 }
+.ui.\31\31.buttons > .button,
 .ui.eleven.buttons > .button {
   width: 9.09%;
 }
+.ui.\31\32.buttons > .button,
 .ui.twelve.buttons > .button {
   width: 8.3333%;
 }
@@ -1037,36 +1048,48 @@
   -ms-box-sizing: border-box;
   box-sizing: border-box;
 }
+
+.ui.\32.vertical.buttons > .button,
 .ui.two.vertical.buttons > .button {
   height: 50%;
 }
+.ui.\33.vertical.buttons > .button,
 .ui.three.vertical.buttons > .button {
   height: 33.333%;
 }
+.ui.\34.vertical.buttons > .button,
 .ui.four.vertical.buttons > .button {
   height: 25%;
 }
+.ui.\35.vertical.buttons > .button,
 .ui.five.vertical.buttons > .button {
   height: 20%;
 }
+.ui.\36.vertical.buttons > .button,
 .ui.six.vertical.buttons > .button {
   height: 16.666%;
 }
+.ui.\37.vertical.buttons > .button,
 .ui.seven.vertical.buttons > .button {
   height: 14.285%;
 }
+.ui.\38.vertical.buttons > .button,
 .ui.eight.vertical.buttons > .button {
   height: 12.500%;
 }
+.ui.\39.vertical.buttons > .button,
 .ui.nine.vertical.buttons > .button {
   height: 11.11%;
 }
+.ui.\31\30.vertical.buttons > .button,
 .ui.ten.vertical.buttons > .button {
   height: 10%;
 }
+.ui.\31\31.vertical.buttons > .button,
 .ui.eleven.vertical.buttons > .button {
   height: 9.09%;
 }
+.ui.\31\32.vertical.buttons > .button,
 .ui.twelve.vertical.buttons > .button {
   height: 8.3333%;
 }