Include new "generateMap" setting feature

Added the "generateMap" setting to the list of configurations. Possible options include true or false, with true being the default (so as to not disrupt anybody's current usage of this extension).

package.json

@@ -100,6 +100,13 @@
                     ],
                     "default": null,
                     "description": "This setting is useful when you deals with only few of sass files. Only mentioned Sass files will be included. \nNOTE: No need to include partial sass files."
+                },
+                "liveSassCompile.settings.generateMap": {
+                    "type": [
+                        "boolean"
+                    ],
+                    "default": true,
+                    "description": "Choose whether this script automatically comiles map files for the CSS generated from the compiler."
                 }
             }
         }