Add eslint semi rule

.eslintrc.json

@@ -2,6 +2,7 @@
 	"rules": {
 		"indent": ["error", "tab"],
 		"quotes": ["error", "double"],
+        "semi": ["error"],
 		"max-len": ["error", 250],
 		"curly": "error",
 		"camelcase": ["error", {"properties": "never"}],