Implement SASS LineFeed parameter in Config (#385)

Allow a config setting to apply a value to the SASS Compiler LineFeed configuration option.

Author: achbed

src/WebCompiler/Compile/SassOptions.cs

@@ -49,6 +49,10 @@ protected override void LoadSettings(Config config)
             var sourceMapRoot = GetValue(config, "sourceMapRoot");
             if (sourceMapRoot != null)
                 SourceMapRoot = sourceMapRoot;
+
+            var lineFeed = GetValue(config, "lineFeed");
+            if (lineFeed != null)
+                LineFeed = lineFeed;
         }
 
         /// <summary>