生成keystore
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 | keytool -genkey -v -keystore android.keystore -alias android -keyalg RSA -validity 20000 -keystore /Users/jovi/android.keystore
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使用工具签名
example:
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 | perl signer.pl -k ./test.keystore -p1 1234 -a alias -p2 1234 -s ./source_apk -d ./output_apk
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[-keystore|-k]   : The path of your keystore file
[-keypass|-p2]   : The password of the alias
[-storepass|-p1] : The password of the keystore file
[-src_dir|-s]    : The source directory of your apk files
[-dst_dir|-d]    : The destinate output directiory of your signed apk files
[-alias|-a]      : The alias of the keystore file
打包错误时查看具体原因
| 1
 | gradlew --info build clean
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