remove npm scripts

Author: taoqiufeng

package.json

@@ -4,9 +4,7 @@
 	"description": "A very fast HTML parser, generating a simplified DOM, with basic element query support.",
 	"main": "index.js",
 	"scripts": {
-		"test": "gulp && mocha && exit 0",
-		"posttest": "mocha -R travis-cov",
-		"coverage": "mocha -R html-cov > coverage.html",
+		"test": "gulp && mocha",
 		"build": "gulp"
 	},
 	"author": "Xiaoyi Shi <[email protected]>",