Fixes #54. LESS beautifier using PrettyDiff now fixed.

The `lang` option was incorrectly set to `less`,
it should have been (now is) set to `css`.

examples/simple-jsbeautifyrc/test2.less

@@ -0,0 +1,169 @@
+// main: style.less
+@import (reference)"variables.less";
+@import (reference)"mixins.less";
+
+.modal {
+      position: fixed;
+    height: 100%;
+    width: 100%;
+    background-color: fade(@black, 70%);
+    z-index: 10;
+    opacity: 0;
+    display: none;
+
+    .innerModal {
+        margin: auto;
+            background-color: @white;
+        overflow: hidden;
+        -webkit-transform: translateY(-100%);
+        -moz-transform: translateY(-100%);
+        -ms-transform: translateY(-100%);
+        -o-transform: translateY(-100%);
+        transform: translateY(-100%);
+
+        .fa {
+            float: right;
+            color: @white;
+            background-color: firebrick;
+            padding: 5px 7px;
+            border-radius: 20px;
+
+            &:hover {
+                background-color: lighten(@black, 50%);
+                cursor: pointer;
+            }
+
+            &:active {
+                background-color: lighten(@black, 25%);
+            }
+        }
+    }
+
+    &.modal-2text {
+        .innerModal {
+            width: @container-width;
+            margin-top: 50px;
+            height: 75%;
+            padding: 10px 25px;
+            background-color: gainsboro;
+            border-radius: 4px;
+
+            h2 {
+                margin: 0px 0px 7px 0px;
+            }
+
+            div {
+                height: 70%;
+                overflow-y: scroll;
+                background-color: @white;
+                padding: 15px;
+                border-radius: 4px;
+            }
+
+            .large-cta {
+                margin-top: 25px;
+            }
+        }
+    }
+}
+
+#modal-video {
+    .innerModal {
+        left: 10%;
+        margin-top: 30px;
+        width: 1000px;
+        background-color: lighten(@black, 25%);
+
+        iframe {
+            width: 600px;
+            height: 340px;
+            margin: 2% auto;
+        }
+        //container
+        > div {
+            text-align: center;
+
+            a {
+                .styleLinks(@white, darken(@white, 10%));
+                padding: 5px;
+                text-transform: uppercase;
+
+                &:hover {
+                    background-color: fade(@white, 15%);
+                }
+
+                &:active {
+                    background-color: fade(@white, 30%);
+                }
+            }
+
+            h3 {
+                color: @white;
+                font-size: 3em;
+                margin: 20px auto;
+            }
+
+            button {
+                margin-bottom: 50px;
+            }
+        }
+    }
+}
+
+.slideIn {
+    .animation(SlideIn, 0.5s);
+}
+
+@-webkit-keyframes SlideIn {
+    0% {
+        .transform(translateY(-100%));
+    }
+
+    100% {
+        .transform(translateY(0px));
+    }
+}
+
+.fadeIn {
+    display: block;
+    .animation(FadeIn, 0.5s);
+}
+
+@-webkit-keyframes FadeIn {
+    0% {
+        opacity: 0;
+    }
+
+    100% {
+        opacity: 1;
+    }
+}
+
+.slideOut {
+    .animation(SlideOut, 0.5s);
+}
+
+@-webkit-keyframes SlideOut {
+    0% {
+        .transform(translateY(0%));
+    }
+
+    100% {
+        .transform(translateY(-100%));
+    }
+}
+
+.fadeOut {
+    .animation(FadeOut, 0.5s);
+}
+
+@-webkit-keyframes FadeOut {
+    0% {
+        opacity: 1;
+    }
+
+    100% {
+        opacity: 0;
+        display: none;
+    }
+}

lib/langs/less-beautify.js

@@ -5,7 +5,7 @@ var prettydiff = require('prettydiff');
 module.exports = function (text, options, callback) {
   var args = {
       source: text,
-      lang: 'less',
+      lang: 'css',
       mode: 'beautify'
   },
   output = prettydiff.api(args);