Fixed eslint issue

lib/Line.js

@@ -1,9 +1,9 @@
 class Line {
 	constructor(x1, y1, x2, y2, style = "#000000") {
 		this.pos = { x: x1, y: y1 };
-        this.target = { x: x2, y: y2 };
+		this.target = { x: x2, y: y2 };
 		this.style = style;
 	}
 }
-  
+
 module.exports = Line;

lib/renderer/CanvasRenderer.js

@@ -92,7 +92,7 @@ class CanvasRenderer {
 
 					ctx.fill();
 				} else if (child.style && child.target) {
-                  	ctx.beginPath();
+					ctx.beginPath();
 					ctx.moveTo(0,0);
 					ctx.lineTo(child.target.x, child.target.y);
 					ctx.strokeStyle = child.style;