Fix script

Author: ayufan

Jenkinsfile

@@ -12,7 +12,7 @@ properties([
 
 node('digitalocean && ubuntu-16.04 && 8gb && android-7.0') {
 	stage 'System'
-	sh '''!/bin/bash
+	sh '''#!/bin/bash
 	sudo apt-get update -y
 	sudo apt-get install -y openjdk-8-jdk python git-core gnupg flex bison gperf build-essential \
 		zip curl zlib1g-dev gcc-multilib g++-multilib libc6-dev-i386 \