Add formatting libraries to composer.json

vendor/leafo/lessphp/tests/inputs/nested.less

@@ -0,0 +1,60 @@
+#header {
+  color: black;
+
+  .navigation {
+    font-size: 12px;
+	.border {
+		.outside {
+			color: blue;
+		}
+	}
+  }
+  .logo {
+    width: 300px;
+    &:hover { text-decoration: none }
+  }
+}
+
+a { b { ul { li { color: green; } } } }
+
+this { will { not { show { } } } }
+
+.cool {
+  div & { color: green; }
+  p & span { color: yellow; }
+}
+
+another {
+ .cool;
+}
+
+b {
+  & .something {
+    color: blue;
+  }
+
+  &.something {
+    color: blue;
+  }
+}
+
+.foo {
+  .bar, .baz {
+    & .qux {
+      display: block;
+    }
+    .qux & {
+      display: inline;
+    }
+    .qux & .biz {
+      display: none;
+    }
+  }
+}
+
+b {
+	hello [x="&yeah"] {
+		color: red;
+	}
+}
+